BUBBLES FOR MEDICAL IMAGING AND THERAPY - Michel Versluis - Point of Care Ultrasound Conference

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BUBBLES FOR MEDICAL IMAGING AND THERAPY - Michel Versluis - Point of Care Ultrasound Conference
BUBBLES
FOR MEDICAL IMAGING AND THERAPY

                                Michel Versluis
  PHYSICS OF FLUIDS.
         Point of Care
    Ultrasound Conference
            POCUS
    13 April 2021 (on-line)
BUBBLES FOR MEDICAL IMAGING AND THERAPY - Michel Versluis - Point of Care Ultrasound Conference
Bubbles in ultrasound
BUBBLES FOR MEDICAL IMAGING AND THERAPY - Michel Versluis - Point of Care Ultrasound Conference
Bubbles in ultrasound
  Imaging
BUBBLES FOR MEDICAL IMAGING AND THERAPY - Michel Versluis - Point of Care Ultrasound Conference
Bubbles in ultrasound
  Imaging

 Therapy
BUBBLES FOR MEDICAL IMAGING AND THERAPY - Michel Versluis - Point of Care Ultrasound Conference
Bubbles in ultrasound
  Imaging

 Therapy

 Cleaning
BUBBLES FOR MEDICAL IMAGING AND THERAPY - Michel Versluis - Point of Care Ultrasound Conference
Ultrasound imaging and therapy with bubbles
BUBBLES FOR MEDICAL IMAGING AND THERAPY - Michel Versluis - Point of Care Ultrasound Conference
Ultrasound imaging and therapy with bubbles
BUBBLES FOR MEDICAL IMAGING AND THERAPY - Michel Versluis - Point of Care Ultrasound Conference
Ultrasound imaging and therapy with bubbles
BUBBLES FOR MEDICAL IMAGING AND THERAPY - Michel Versluis - Point of Care Ultrasound Conference
Ultrasound imaging and therapy with bubbles
BUBBLES FOR MEDICAL IMAGING AND THERAPY - Michel Versluis - Point of Care Ultrasound Conference
Ultrasound imaging and therapy with bubbles
                                                              10-8

                              scattering cross section (m2)
                                                                          bubble
                                                              10-12

                                                              10-16                            particle

                                                              10-20
                                                                      1                                   10
                                                                                   frequency (MHz)
Ultrasound imaging and therapy with bubbles
                                                              10-8

                              scattering cross section (m2)
                                                                          bubble
                                                              10-12

                                                              10-16                            particle

                                                              10-20
                                                                      1                                   10
                                                                                   frequency (MHz)
Ultrasound imaging and therapy with bubbles
                                                              10-8

                              scattering cross section (m2)
                                                                          bubble
                                                              10-12

                                                              10-16                            particle

                                                              10-20
                                                                      1                                   10
                                                                                   frequency (MHz)
Methods: echoPIV and PC-MRI

 PHYSICS OF FLUIDS.
Ultrafast Contrast Ultrasound
                                                      First in-man

ULTRASOUND PARTICLE IMAGE VELOCIMETRY IN THE ABDOMINAL AORTA: FIRST RESULTS IN HUMANS AND COMPARISON WITH PHASE CONTRAST MAGNETIC RESONANCE IMAGING.
    Stefan A.J. Engelhard, Jason Voorneveld, Hendrik J. Vos, Jos J.M. Westenberg, Frank J.H. Gijsen, Pavel Taimr, Michel Versluis, Nico de Jong, Johan G. Bosch,
    Michel M.P.J. Reijnen, and Erik Groot Jebbink.
    Radiology 289 (1), 119–125 (2018).
HIGH-FRAME RATE CONTRAST-ENHANCED ULTRASOUND FOR VELOCIMETRY IN THE HUMAN ABDOMINAL AORTA.
     J. Voorneveld, S. Engelhard, H.J. Vos, M.M.P.J. Reijnen, F. Gijsen, M. Versluis, E. Groot Jebbink, N. de Jong, and J.G. Bosch.
     IEEE Trans UFFC 65(12), 2245–2254 (2018).
Ultrafast Contrast Ultrasound
                                                      First in-man

ULTRASOUND PARTICLE IMAGE VELOCIMETRY IN THE ABDOMINAL AORTA: FIRST RESULTS IN HUMANS AND COMPARISON WITH PHASE CONTRAST MAGNETIC RESONANCE IMAGING.
    Stefan A.J. Engelhard, Jason Voorneveld, Hendrik J. Vos, Jos J.M. Westenberg, Frank J.H. Gijsen, Pavel Taimr, Michel Versluis, Nico de Jong, Johan G. Bosch,
    Michel M.P.J. Reijnen, and Erik Groot Jebbink.
    Radiology 289 (1), 119–125 (2018).
HIGH-FRAME RATE CONTRAST-ENHANCED ULTRASOUND FOR VELOCIMETRY IN THE HUMAN ABDOMINAL AORTA.
     J. Voorneveld, S. Engelhard, H.J. Vos, M.M.P.J. Reijnen, F. Gijsen, M. Versluis, E. Groot Jebbink, N. de Jong, and J.G. Bosch.
     IEEE Trans UFFC 65(12), 2245–2254 (2018).
Ultrafast Contrast Ultrasound
                                                      First in-man

ULTRASOUND PARTICLE IMAGE VELOCIMETRY IN THE ABDOMINAL AORTA: FIRST RESULTS IN HUMANS AND COMPARISON WITH PHASE CONTRAST MAGNETIC RESONANCE IMAGING.
    Stefan A.J. Engelhard, Jason Voorneveld, Hendrik J. Vos, Jos J.M. Westenberg, Frank J.H. Gijsen, Pavel Taimr, Michel Versluis, Nico de Jong, Johan G. Bosch,
    Michel M.P.J. Reijnen, and Erik Groot Jebbink.
    Radiology 289 (1), 119–125 (2018).
HIGH-FRAME RATE CONTRAST-ENHANCED ULTRASOUND FOR VELOCIMETRY IN THE HUMAN ABDOMINAL AORTA.
     J. Voorneveld, S. Engelhard, H.J. Vos, M.M.P.J. Reijnen, F. Gijsen, M. Versluis, E. Groot Jebbink, N. de Jong, and J.G. Bosch.
     IEEE Trans UFFC 65(12), 2245–2254 (2018).
beat the single-wave resolution limit.

     Ultrafast imaging combined with super-localiza on
                                                                      Mathias Fink is director of the Langevin Institute at the École Supérieure de Physique et de Chimie Industrielles de la Ville de Paris in
                                                                      Paris. Mickael Tanter is a research professor in the institute. They, along with six others, founded SuperSonic Imagine in 2005.

                                                                                                                         LETTER    RESEARCH
                                                                     The human body supports the propagation of many LETTER   RESEARCH
                                                                                                                          Three different types of wave interaction can be ex-
                                                                      kinds of waves, each of which can provide an image with a ploited in multiwave imaging. In one application, the inter-
                                                                      specific type of information.   For example, ultrasonic 1waves
                                                                                                                                 mm1 mmb
                                                                                                                                         action of one 1kind
                                                                                                                                                         mm 1ofmm
                                                                                                                                                                wave with tissue can generate a second
aa                                                                                           a  a                                            b
                                                                      reveal a tissue’s density and how it responds to compression kind        of wave.
                                                                                                                                          Errico   et al,InNature,
                                                                                                                                                            thermoacoustic
                                                                                                                                                                   2015 imaging, for example, ab-
                                                                      forces, and mechanical shear waves indicate how tissues re- sorbed electromagnetic radiation causes a transient change
                                                                      spond to shear forces. Low-frequency electromagnetic waves in temperature that radiates an ultrasonic wave through ther-
                                                                      are sensitive to electrical conductivity; optical waves tell mal expansion (see the article by Stanislav Y. Emelianov, Pai-
                                                                      about optical absorption. In all those circumstances, physi- Chi Li, and Matthew O’Donnell in PHYSICS TODAY, May 2009,
                                                                      cists have striven to obtain the best overall contrast and res- page 34).
                                                                      olution. Now, after decades of work, we are pushing against
                                                                      the physical limits inherent in each imaging modality. As de-
                     33                                               scribed in the box on page 30, that limit is, in many cases, not
                                                                      determined by wavelength.
               22                                                           Physicians quickly realized that for medical imaging and           a
                                                                      diagnosis, one way to overcome the inherent limits of single-
                    11                                                mode imaging is to combine different imaging modalities.
                                                                      The basic idea of multimodality imaging—for example, in the
                                                                      combination
                                                                           500 μm
                                                                                        of positron emission tomography and com-
                                                                      puted tomography—is to associate the high-resolution mor-
                                                                               500 μm
                                                                      phological image of a first modality (CT) to an image of the
                                                         16 μm
b                                    c                      16 μm     second
                                                                        1       modality (PET) that is poorly resolved but that   pro-
                                                                                                                               1 mm                    1 mm
b                                            c1                             1               c                                       1 mmd                    1 mm
                                                     1                vides
                                                                          2 a clinically interesting
                                                                                                c    contrast, revealing metabolic ac-        d
                                                                              2
                                                0.8 3
                                                                      tivity in this case. A second example of multimodality imag-
                                      Amplitude (a.u.)

                                                   0.8 3
                                     Amplitude (a.u.)

                                                0.6                 17ing,
                                                                       μm used for mammography, combines ultrasound and x-ray
                                                   0.6                 17 μm       9 μm
                                                0.4
                                                                      images.    However,
                                                                                      9 μm multimodality imaging remains extremely
                                                   0.4                costly and constrained by the inherent physical limits of each
                                                0.2
                                                   0.2
                                                                      separate imaging mode.
                          500 μm
                            500 μm                0
                                                    00 20    40    60New approaches
                                                                         80    100 120
                                                                                                                                                            b
                                                       0  20 Distance
                                                                40    60
                                                                      (μm)   80   100 120
                                                                      Is there
                                                                Distance  (μm) any way to improve diagnostic capabilities other than
d                                                                    with multimodality imaging? Two scientific communities
d                                                                    have suggested new research directions. One line of attack,
                                                                     called molecular imaging, was proposed by chemists and
                                                                     biologists. It differs from traditional imaging in that biomark-
                                                                     ers are used to help image particular targets or pathways.
                                                                     Those biomarkers interact chemically with their surround-
           4
                                                                     ings and thereby increase the contrast.
               4
                                                                          The other approach was proposed independently by var-
                                                                     ious groups in the physics community. It consists                of combin-
                                                                                                                                  Velocity (mm s–1)
                                                                     ing two different waves—one to provide contrast, another                     to–14s–1
                                                                                                                                       Velocity (mm
                                                                                                                                                          –10 –5       0    5 10 14
                                                                                                                                                            )Figure 1. Conventional versus ultrafast ultrasonic imag-
                                                                     provide spatial resolution—to
                                                                                         Figure 3 | uULM   build    a new
                                                                                                                of the      kind of
                                                                                                                       rat brain      image.a Be-
                                                                                                                                   through       thinned –14 skull
                                                                                                                                                                 –10window
                                                                                                                                                             ing. (a)
                                                                                                                                                                        –5    0or 5 10 14
                                                                                                                                                                      In conventional     ultrasound, 100 or more beams are
                                                                     cause of the way through
                                                                                         theFigure
                                                                                               wavesthe3are   combined,
                                                                                                         intact
                                                                                                         | uULM   skull.
                                                                                                                     of the  multiwave
                                                                                                                         a, uULM
                                                                                                                             rat brain      imag-
                                                                                                                                     performed
                                                                                                                                         through    through
                                                                                                                                                      a thinneda thinned
                                                                                                                                                                    skull   skull at aor
                                                                                                                                                                           window
                                                                                                                                                             focused on different locations and the subsequent back-
                                                                     ing produces a single
                                                                                         coronalimage
                                                                                              through    with
                                                                                                   section,      the best
                                                                                                         theBregma
                                                                                                               intact   −1.5contrast
                                                                                                                       skull. mm,
                                                                                                                               a, uULM and
                                                                                                                                     providingreso-
                                                                                                                                                  a resolution
                                                                                                                                           performed      through of 10  µ m × 8 µskull
                                                                                                                                                                      a thinned     m at a
                                                                                                                                                             scattered    echoes are processed     to generate a single image.
       5                                                             lution properties in of depth
                                                                                             the  two    waves.
                                                                                                    andsection,
                                                                                              coronal               Multimodality
                                                                                                         lateral direction,
                                                                                                                   Bregma     −1.5  mm, imaging,
                                                                                                                               respectively.   c, uULMa performed
                                                                                                                                           providing       resolution     through
                                                                                                                                                                          of 10 µ m  × 8 µ m
                                                                                                                                                             (b) In ultrafast imaging, a plane wave probes the whole
                                                                     on500
                                                                         theμmother hand,the
                                                                                           relies
                                                                                              in   onskull
                                                                                              intact
                                                                                                 depth  the
                                                                                                         andatanalysis
                                                                                                               lateral   of
                                                                                                                         −1twomm.images,
                                                                                                                Bregmadirection,    Owing    toeach
                                                                                                                                    respectively.the c,
                                                                                                                                                      attenuation
                                                                                                                                                         uULM        of the
                                                                                                                                                                   performed     through
           5
                                                                                         ultrasound    waves    in the presence    of the bone,    the       medium
                                                                                                                                                        achieved         in a single
                                                                                                                                                                    resolution        shot. Again, the backscattered echoes
                                                                     limited   by
                                                                           500 μm the contrast   and  resolution      properties    of  the  wave
                                                                                              the intact skull at Bregma −1 mm. Owing to the are             attenuation     of the
                                                                                                                                                                  processed to produce the ultrasonic image.
                                                                                                                                                                ti
beat the single-wave resolution limit.

     Ultrafast imaging combined with super-localiza on
                                                                      Mathias Fink is director of the Langevin Institute at the École Supérieure de Physique et de Chimie Industrielles de la Ville de Paris in
                                                                      Paris. Mickael Tanter is a research professor in the institute. They, along with six others, founded SuperSonic Imagine in 2005.

                                                                                                                         LETTER    RESEARCH
                                                                     The human body supports the propagation of many LETTER   RESEARCH
                                                                                                                          Three different types of wave interaction can be ex-
                                                                      kinds of waves, each of which can provide an image with a ploited in multiwave imaging. In one application, the inter-
                                                                      specific type of information.     For example, ultrasonic 1waves
                                                                                                                                   mm1 mmb
                                                                                                                                           action of one 1kind
                                                                                                                                                           mm 1ofmm
                                                                                                                                                                  wave with tissue can generate a second
aa                                                                                            a a                                              b
                                                                      reveal a tissue’s density and how it responds to compression kind          of wave.
                                                                                                                                            Errico   et al,InNature,
                                                                                                                                                              thermoacoustic
                                                                                                                                                                     2015 imaging, for example, ab-
                                                                      forces, and mechanical shear waves indicate how tissues re- sorbed electromagnetic radiation causes a transient change
                                                                      spond to shear forces. Low-frequency electromagnetic waves in temperature that radiates an ultrasonic wave through ther-
                                                                      are sensitive to electrical conductivity; optical waves tell mal expansion (see the article by Stanislav Y. Emelianov, Pai-
                                                                      about optical absorption. In all those circumstances, physi- Chi Li, and Matthew O’Donnell in PHYSICS TODAY, May 2009,
                                                                      cists have striven to obtain the best overall contrast and res- page 34).
                                                                      olution. Now, after decades of work, we are pushing against
                                                                      the physical limits inherent in each imaging modality. As de-
                     33                                               scribed in the box on page 30, that limit is, in many cases, not
                                                                      determined by wavelength.
               22                                                           Physicians quickly realized that for medical imaging and             a
                                                                      diagnosis, one way to overcome the inherent limits of single-
                    11                                                mode imaging is to combine different imaging modalities.
                                                                      The basic idea of multimodality imaging—for example, in the
                                                                      combination
                                                                           500 μm
                                                                                        of positron emission tomography and com-
                                                                      puted tomography—is to associate the high-resolution mor-
                                                                               500 μm
                                                                      phological image of a first modality (CT) to an image of the
                                                         16 μm
b                                    c                      16 μm     second
                                                                        1       modalityRAT (PET) that
                                                                                            BRAIN C    is poorly resolved but
                                                                                                    ORTEX                     that
                                                                                                                            ESPCI   pro-
                                                                                                                                   PARIS
                                                                                                                                 1 mm                    1 mm
b                                            c1                             1                c                                        1 mmd                    1 mm
                                                     1                vides
                                                                          2 a clinically interesting
                                                                                                c      contrast, revealing metabolic ac-        d
                                                                              2
                                                0.8 3
                                                                      tivity in this case. A second example of multimodality imag-
                                      Amplitude (a.u.)

                                                   0.8 3
                                     Amplitude (a.u.)

                                                0.6                 17ing,
                                                                       μm used for mammography, combines ultrasound and x-ray
                                                   0.6                 17 μm       9 μm
                                                0.4
                                                                      images.    However,
                                                                                      9 μm multimodality imaging remains extremely
                                                   0.4                costly and constrained by the inherent physical limits of each
                                                0.2
                                                   0.2
                                                                      separate imaging mode.
                          500 μm
                            500 μm                0
                                                    00 20    40    60New approaches
                                                                         80    100 120
                                                                                                                                                            b
                                                       0  20 Distance
                                                                40    60
                                                                      (μm)   80   100 120
                                                                      Is there
                                                                Distance  (μm) any way to improve diagnostic capabilities other than
d                                                                    with multimodality imaging? Two scientific communities
d                                                                    have suggested new research directions. One line of attack,
                                                                     called molecular imaging, was proposed by chemists and
                                                                     biologists. It differs from traditional imaging in that biomark-
                                                                     ers are used to help image particular targets or pathways.
                                                                     Those biomarkers interact chemically with their surround-
           4
                                                                     ings and thereby increase the contrast.
               4
                                                                          The other approach was proposed independently by var-
                                                                     ious groups in the physics community. It consists                of combin-
                                                                                                                                  Velocity (mm s–1)
                                                                     ing two different waves—one to provide contrast, another                     to–14s–1
                                                                                                                                       Velocity (mm
                                                                                                                                                          –10 –5       0    5 10 14
                                                                                                                                                            )Figure 1. Conventional versus ultrafast ultrasonic imag-
                                                                     provide spatial resolution—to
                                                                                         Figure 3 | uULM   build    a new
                                                                                                                of the      kind of
                                                                                                                       rat brain      image.a Be-
                                                                                                                                   through       thinned –14 skull
                                                                                                                                                                 –10window
                                                                                                                                                             ing. (a)
                                                                                                                                                                        –5    0or 5 10 14
                                                                                                                                                                      In conventional     ultrasound, 100 or more beams are
                                                                     cause of the way through
                                                                                         theFigure
                                                                                               wavesthe3are   combined,
                                                                                                         intact
                                                                                                         | uULM   skull.
                                                                                                                     of the  multiwave
                                                                                                                         a, uULM
                                                                                                                             rat brain      imag-
                                                                                                                                     performed
                                                                                                                                         through    through
                                                                                                                                                      a thinneda thinned
                                                                                                                                                                    skull   skull at aor
                                                                                                                                                                           window
                                                                                                                                                             focused on different locations and the subsequent back-
                                                                     ing produces a single
                                                                                         coronalimage
                                                                                              through    with
                                                                                                   section,      the best
                                                                                                         theBregma
                                                                                                               intact   −1.5contrast
                                                                                                                       skull. mm,
                                                                                                                               a, uULM and
                                                                                                                                     providingreso-
                                                                                                                                                  a resolution
                                                                                                                                           performed      through of 10  µ m × 8 µskull
                                                                                                                                                                      a thinned     m at a
                                                                                                                                                             scattered    echoes are processed     to generate a single image.
       5                                                             lution properties in of depth
                                                                                             the  two    waves.
                                                                                                    andsection,
                                                                                              coronal               Multimodality
                                                                                                         lateral direction,
                                                                                                                   Bregma     −1.5  mm, imaging,
                                                                                                                               respectively.   c, uULMa performed
                                                                                                                                           providing       resolution     through
                                                                                                                                                                          of 10 µ m  × 8 µ m
                                                                                                                                                             (b) In ultrafast imaging, a plane wave probes the whole
                                                                     on500
                                                                         theμmother hand,the
                                                                                           relies
                                                                                              in   onskull
                                                                                              intact
                                                                                                 depth  the
                                                                                                         andatanalysis
                                                                                                               lateral   of
                                                                                                                         −1twomm.images,
                                                                                                                Bregmadirection,    Owing    toeach
                                                                                                                                    respectively.the c,
                                                                                                                                                      attenuation
                                                                                                                                                         uULM        of the
                                                                                                                                                                   performed     through
           5
                                                                                         ultrasound    waves    in the presence    of the bone,    the       medium
                                                                                                                                                        achieved         in a single
                                                                                                                                                                    resolution        shot. Again, the backscattered echoes
                                                                     limited   by
                                                                           500 μm the contrast   and  resolution      properties    of  the  wave
                                                                                              the intact skull at Bregma −1 mm. Owing to the are             attenuation     of the
                                                                                                                                                                  processed to produce the ultrasonic image.
                                                                                                                                                                ti
beat the single-wave resolution limit.

     Ultrafast imaging combined with super-localiza on
                                                                      Mathias Fink is director of the Langevin Institute at the École Supérieure de Physique et de Chimie Industrielles de la Ville de Paris in
                                                                      Paris. Mickael Tanter is a research professor in the institute. They, along with six others, founded SuperSonic Imagine in 2005.

                                                                                                                         LETTER    RESEARCH
                                                                     The human body supports the propagation of many LETTER   RESEARCH
                                                                                                                          Three different types of wave interaction can be ex-
                                                                      kinds of waves, each of which can provide an image with a ploited in multiwave imaging. In one application, the inter-
                                                                      specific type of information.     For example, ultrasonic 1waves
                                                                                                                                   mm1 mmb
                                                                                                                                           action of one 1kind
                                                                                                                                                           mm 1ofmm
                                                                                                                                                                  wave with tissue can generate a second
aa                                                                                            a a                                              b
                                                                      reveal a tissue’s density and how it responds to compression kind          of wave.
                                                                                                                                            Errico   et al,InNature,
                                                                                                                                                              thermoacoustic
                                                                                                                                                                     2015 imaging, for example, ab-
                                                                      forces, and mechanical shear waves indicate how tissues re- sorbed electromagnetic radiation causes a transient change
                                                                      spond to shear forces. Low-frequency electromagnetic waves in temperature that radiates an ultrasonic wave through ther-
                                                                      are sensitive to electrical conductivity; optical waves tell mal expansion (see the article by Stanislav Y. Emelianov, Pai-
                                                                      about optical absorption. In all those circumstances, physi- Chi Li, and Matthew O’Donnell in PHYSICS TODAY, May 2009,
                                                                      cists have striven to obtain the best overall contrast and res- page 34).
                                                                      olution. Now, after decades of work, we are pushing against
                                                                      the physical limits inherent in each imaging modality. As de-
                     33                                               scribed in the box on page 30, that limit is, in many cases, not
                                                                      determined by wavelength.
               22                                                           Physicians quickly realized that for medical imaging and             a
                                                                      diagnosis, one way to overcome the inherent limits of single-
                    11                                                mode imaging is to combine different imaging modalities.
                                                                      The basic idea of multimodality imaging—for example, in the
                                                                      combination       of positron emission tomography and com-
Super resolution imaging                                 16 μm
                                                                           500 μm
                                                                      puted tomography—is to associate the high-resolution mor-
                                                                               500 μm
                                                                      phological image of a first modality (CT) to an image of the
b                                    c                      16 μm     second
                                                                        1       modalityRAT (PET) that
                                                                                            BRAIN C    is poorly resolved but
                                                                                                    ORTEX                     that
                                                                                                                            ESPCI   pro-
                                                                                                                                   PARIS
                                                                                                                                 1 mm                    1 mm
b                                            c1                             1                c                                        1 mmd                    1 mm
                                                     1                vides
                                                                          2 a clinically interesting
                                                                                                c      contrast, revealing metabolic ac-        d
                                                                              2
                                                0.8 3
                                                                      tivity in this case. A second example of multimodality imag-
                                      Amplitude (a.u.)

                                                   0.8 3
                                     Amplitude (a.u.)

                                                0.6                 17ing,
                                                                       μm used for mammography, combines ultrasound and x-ray
                                                   0.6                 17 μm       9 μm
                                                0.4
                                                                      images.    However,
                                                                                      9 μm multimodality imaging remains extremely
                                                   0.4                costly and constrained by the inherent physical limits of each
                                                0.2
                                                   0.2
                                                                      separate imaging mode.
                          500 μm
                            500 μm                0
                                                    00 20    40    60New approaches
                                                                         80    100 120
                                                                                                                                                            b
                                                       0  20 Distance
                                                                40    60
                                                                      (μm)   80   100 120
                                                                      Is there
                                                                Distance  (μm) any way to improve diagnostic capabilities other than
d                                                                    with multimodality imaging? Two scientific communities
d                                                                    have suggested new research directions. One line of attack,
                                                                     called molecular imaging, was proposed by chemists and
                                                                     biologists. It differs from traditional imaging in that biomark-
                                                                     ers are used to help image particular targets or pathways.
                                                                     Those biomarkers interact chemically with their surround-
           4
                                                                     ings and thereby increase the contrast.
               4
                                                                          The other approach was proposed independently by var-
                                                                     ious groups in the physics community. It consists                of combin-
                                                                                                                                  Velocity (mm s–1)
                                                                     ing two different waves—one to provide contrast, another                     to–14s–1
                                                                                                                                       Velocity (mm
                                                                                                                                                          –10 –5       0    5 10 14
                                                                                                                                                            )Figure 1. Conventional versus ultrafast ultrasonic imag-
                                                                     provide spatial resolution—to
                                                                                         Figure 3 | uULM   build    a new
                                                                                                                of the      kind of
                                                                                                                       rat brain      image.a Be-
                                                                                                                                   through       thinned –14 skull
                                                                                                                                                                 –10window
                                                                                                                                                             ing. (a)
                                                                                                                                                                        –5    0or 5 10 14
                                                                                                                                                                      In conventional     ultrasound, 100 or more beams are
                                                                     cause of the way through
                                                                                         theFigure
                                                                                               wavesthe3are   combined,
                                                                                                         intact
                                                                                                         | uULM   skull.
                                                                                                                     of the  multiwave
                                                                                                                         a, uULM
                                                                                                                             rat brain      imag-
                                                                                                                                     performed
                                                                                                                                         through    through
                                                                                                                                                      a thinneda thinned
                                                                                                                                                                    skull   skull at aor
                                                                                                                                                                           window
                                                                                                                                                             focused on different locations and the subsequent back-
                                                                     ing produces a single
                                                                                         coronalimage
                                                                                              through    with
                                                                                                   section,      the best
                                                                                                         theBregma
                                                                                                               intact   −1.5contrast
                                                                                                                       skull. mm,
                                                                                                                               a, uULM and
                                                                                                                                     providingreso-
                                                                                                                                                  a resolution
                                                                                                                                           performed      through of 10  µ m × 8 µskull
                                                                                                                                                                      a thinned     m at a
                                                                                                                                                             scattered    echoes are processed     to generate a single image.
       5                                                             lution properties in of depth
                                                                                             the  two    waves.
                                                                                                    andsection,
                                                                                              coronal               Multimodality
                                                                                                         lateral direction,
                                                                                                                   Bregma     −1.5  mm, imaging,
                                                                                                                               respectively.   c, uULMa performed
                                                                                                                                           providing       resolution     through
                                                                                                                                                                          of 10 µ m  × 8 µ m
                                                                                                                                                             (b) In ultrafast imaging, a plane wave probes the whole
                                                                     on500
                                                                         theμmother hand,the
                                                                                           relies
                                                                                              in   onskull
                                                                                              intact
                                                                                                 depth  the
                                                                                                         andatanalysis
                                                                                                               lateral   of
                                                                                                                         −1twomm.images,
                                                                                                                Bregmadirection,    Owing    toeach
                                                                                                                                    respectively.the c,
                                                                                                                                                      attenuation
                                                                                                                                                         uULM        of the
                                                                                                                                                                   performed     through
           5
                                                                                         ultrasound    waves    in the presence    of the bone,    the       medium
                                                                                                                                                        achieved         in a single
                                                                                                                                                                    resolution        shot. Again, the backscattered echoes
                                                                     limited   by
                                                                           500 μm the contrast   and  resolution      properties    of  the  wave
                                                                                              the intact skull at Bregma −1 mm. Owing to the are             attenuation     of the
                                                                                                                                                                  processed to produce the ultrasonic image.
                                                                                                                                                                ti
Bubbles for molecular imaging and targeted drug delivery
Bubbles for molecular imaging and targeted drug delivery

      Jonathan Lindner, OHSU Portland, OR
Bubbles for molecular imaging and targeted drug delivery

      Jonathan Lindner, OHSU Portland, OR

                                            ACOUSTIC BEHAVIOR OF MICROBUBBLES AND IMPLICATIONS FOR DRUG DELIVERY (REVIEW).
                                            Klazina Kooiman, Hendrik J. Vos, Michel Versluis, and Nico de Jong. Adv. Drug Deliv. Rev. 72, 28–48 (2014).
Bubbles for molecular imaging and targeted drug delivery

      Jonathan Lindner, OHSU Portland, OR

                                                   Bright eld                    Bodipy-labeled                     DiI-labeled                      Overlay

                                            ACOUSTIC BEHAVIOR OF MICROBUBBLES AND IMPLICATIONS FOR DRUG DELIVERY (REVIEW).
                                            Klazina Kooiman, Hendrik J. Vos, Michel Versluis, and Nico de Jong. Adv. Drug Deliv. Rev. 72, 28–48 (2014).
fi
Bubbles for molecular imaging and targeted drug delivery

      Jonathan Lindner, OHSU Portland, OR
                                                                                                                                                          80 kPa, 1000 cycles

                                                   Bright eld                    Bodipy-labeled                     DiI-labeled                      Overlay

                                            ACOUSTIC BEHAVIOR OF MICROBUBBLES AND IMPLICATIONS FOR DRUG DELIVERY (REVIEW).
                                            Klazina Kooiman, Hendrik J. Vos, Michel Versluis, and Nico de Jong. Adv. Drug Deliv. Rev. 72, 28–48 (2014).
fi
Bubbles for molecular imaging and targeted drug delivery

                         Jonathan Lindner, OHSU Portland, OR
                                                                                                               80 kPa, 1000 cycles

                                                                  Bright eld   Bodipy-labeled   DiI-labeled   Overlay

I. De Cock, G. Lajoinie, M. Versluis, I. Lentacker, S. De Smedt
                              Biomaterials 83, 294–307 (2016)
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Bubbles for molecular imaging and targeted drug delivery

                         Jonathan Lindner, OHSU Portland, OR
                                                                                                      80 kPa, 1000 cycles

I. De Cock, G. Lajoinie, M. Versluis, I. Lentacker, S. De Smedt   G. Lajoinie, Y. Luan, E. Gelderblom, B. Dollet, F. Mastik,
                              Biomaterials 83, 294–307 (2016)     I. Lentacker, H. Dewitte, N. de Jong, and M. Versluis.
                                                                  Nature Comm. Phys. 1, 22 (2018).
Bubbles for molecular imaging and targeted drug delivery

                         Jonathan Lindner, OHSU Portland, OR
                                                                                                                                                                                 80 kPa, 1000 cycles

I. De Cock, G. Lajoinie, M. Versluis, I. Lentacker, S. De Smedt   V. Pereno, M. Arona, O. Vince. C. Mannaris, A. Seth, M. de Saint Victor,   G. Lajoinie, Y. Luan, E. Gelderblom, B. Dollet, F. Mastik,
                              Biomaterials 83, 294–307 (2016)     G. Lajoinie, M. Versluis, C. Coussios, D. Carugo, and E. Stride            I. Lentacker, H. Dewitte, N. de Jong, and M. Versluis.
                                                                  Biomicrofluidics 12, 034109 (2018).                                        Nature Comm. Phys. 1, 22 (2018).
Cavita on nuclei for ultrasound-triggered drug delivery
   ti
Cavita on nuclei for ultrasound-triggered drug delivery

        MOLECULAR BODY IMAGING: MR IMAGING, CT, AND US. PART I. PRINCIPLES
        Moritz F. Kircher and Jürgen K. Willmann, Radiology 263(3), 633 (2012).
   ti
Cavita on nuclei for ultrasound-triggered drug delivery

          MOLECULAR BODY IMAGING: MR IMAGING, CT, AND US. PART I. PRINCIPLES
          Moritz F. Kircher and Jürgen K. Willmann, Radiology 263(3), 633 (2012).

        10 μm   ACOUSTIC DROPLET VAPORIZATION IS INITIATED BY SUPERHARMONIC FOCUSING.
                Oleksandr Shpak, Martin Verweij, Rik Vos, Nico de Jong, Detlef Lohse, and Michel Versluis. PNAS 111, 1697-1702 (2014).
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Cavita on nuclei for ultrasound-triggered drug delivery
                                                                                                                      a                           c

                                                                                                  a                                   c
                                                                                                                      b                           d

                                                                                                                              10 μm                   10 μm
                                                                                                  b                                   d

                                                                                                             10 μm                        10 μm
          MOLECULAR BODY IMAGING: MR IMAGING, CT, AND US. PART I. PRINCIPLES
          Moritz F. Kircher and Jürgen K. Willmann, Radiology 263(3), 633 (2012).

        10 μm   ACOUSTIC DROPLET VAPORIZATION IS INITIATED BY SUPERHARMONIC FOCUSING.
                Oleksandr Shpak, Martin Verweij, Rik Vos, Nico de Jong, Detlef Lohse, and Michel Versluis. PNAS 111, 1697-1702 (2014).
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Cavita on nuclei for ultrasound-triggered drug delivery
                                                                                                                      a                           c

                                                                                                  a                                   c
                                                                                                                      b                           d

                                                                                                                              10 μm                   10 μm
                                                                                                  b                                   d

                                                                                                             10 μm                        10 μm
          MOLECULAR BODY IMAGING: MR IMAGING, CT, AND US. PART I. PRINCIPLES
          Moritz F. Kircher and Jürgen K. Willmann, Radiology 263(3), 633 (2012).

        10 μm   ACOUSTIC DROPLET VAPORIZATION IS INITIATED BY SUPERHARMONIC FOCUSING.
                Oleksandr Shpak, Martin Verweij, Rik Vos, Nico de Jong, Detlef Lohse, and Michel Versluis. PNAS 111, 1697-1702 (2014).
   ti
Thrombolysis using ultrasound (in real-time) in ‘De Kennis van Nu’ - broadcast Dutch national TV - April 2017
Thrombolysis using ultrasound (in real-time) in ‘De Kennis van Nu’ - broadcast Dutch national TV - April 2017
Aspalatholysis using ultrasound (in real-time) in ‘De Kennis van Nu’ - broadcast Dutch national TV - April 2017
Aspalatholysis using ultrasound (in real-time) in ‘De Kennis van Nu’ - broadcast Dutch national TV - April 2017
  Aspalathus linearis - rooibos [rɔːibɔs] (South-African red bush tea)
Cavita on bubbles
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Cavita on bubbles
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Cavita on bubbles

                    Larry Cru
                    Center for Medical and Industrial Ultrasoun
                    University of Washington, Seattle, USA
m

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          d
Cavita on bubbles

                    Larry Cru
                    Center for Medical and Industrial Ultrasoun
                    University of Washington, Seattle, USA
m

     ti
          d
How to sink a ship
Therapeu c applica ons of bubbles

                                    14
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Therapeu c applica ons of bubbles

                                    14
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Therapeu c applica ons of bubbles

                                               14
    SONOPORORATION        PHILIPS ULTRASOUND
       ti
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Therapeu c applica ons of bubbles

                                                                                                                                             14
    SONOPORORATION        PHILIPS ULTRASOUND   MEMBRANE PERFORATION AND RECOVERY DYNAMICS IN MICROBUBBLE-MEDIATED SONOPORATION
                                               Yaxin Hu, Jennifer M.F. Wan, and Alfred C.H. Yu, Ultrasound Med. Biol. 39, 2393-2405 (2013)
       ti
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TAA and TriMix mRNA lead to the induction of durable antitumor responses in a
 chemorefractory melanoma patient11,       12
                                             . On the basis of these results, we evaluated the

   Cancer immunotherapy from an ultrasound perspec ve
 potential of simultaneous delivery of TAA mRNA and TriMix via microbubbles and
 ultrasound to induce potent antitumor immune responses in mice, as schematically
 depicted in Figure 1A.

       with Heleen
        Figure      Dewitte,
               1. mRNA        Ine De
                       sonoporation    Cock,
                                    of DCs    Stefaan
                                           using      De Smedt,
                                                 mRNA-loaded      Ine Lentacker
                                                             microbubbles and
                                                ultrasound.
       (A) Schematic representation of the use of mRNA-loaded microbubbles, which implode
         upon exposure to ultrasound and sonoporate the DCs. As a result, both antigen and
             DC modulating proteins are produced by the DC, which can lead to antigen
         presentation and T cell activation. (B) Schematic representation of the production of
        mRNA-loaded microbubbles. Antigen and TriMix mRNA are premixed and complexed
       to biotinylated cationic liposomes. The resulting mRNA-lipoplexes can then be attached
THE POTENTIAL OF ANTIGENtoAND the TRIMIX SONOPORATION
                                  surface                   USING
                                          of avidinylated lipid    MRNA-LOADED MICROBUBBLES FOR
                                                                microbubbles.
ULTRASOUND-TRIGGERED CANCER IMMUNOTHERAPY.
H. Dewitte, S.V. Lint, C. Heirman, K. Thielemans, S.C.De Smedt, K. Breckpot, and I. Lentacker,
J. Controlled Release 194, 28 (2014).

       126 | C h a p t e r 5
SONOPRINTING AND THE IMPORTANCE OF MICROBUBBLE LOADING FOR THE ULTRASOUND-MEDIATED DELIVERY OF NANOPARTICLES.
Ine De Cock, Guillaume Lajoinie, Michel Versluis, Stefaan C. De Smedt, and Ine Lentacker.
Biomaterials 83, 294–307 (2016).

                                                                                                                ti
TAA and TriMix mRNA lead to the induction of durable antitumor responses in a
 chemorefractory melanoma patient11,       12
                                             . On the basis of these results, we evaluated the

   Cancer immunotherapy from an ultrasound perspec ve
 potential of simultaneous delivery of TAA mRNA and TriMix via microbubbles and
 ultrasound to induce potent antitumor immune responses in mice, as schematically
 depicted in Figure 1A.

       with Heleen
        Figure      Dewitte,
               1. mRNA        Ine De
                       sonoporation    Cock,
                                    of DCs    Stefaan
                                           using      De Smedt,
                                                 mRNA-loaded      Ine Lentacker
                                                             microbubbles and
                                                ultrasound.
       (A) Schematic representation of the use of mRNA-loaded microbubbles, which implode
         upon exposure to ultrasound and sonoporate the DCs. As a result, both antigen and
             DC modulating proteins are produced by the DC, which can lead to antigen
         presentation and T cell activation. (B) Schematic representation of the production of
        mRNA-loaded microbubbles. Antigen and TriMix mRNA are premixed and complexed                 Figure 7. Therapeutic vaccination of E.G7-OVA-beari
       to biotinylated cationic liposomes. The resulting mRNA-lipoplexes can then be attached
THE POTENTIAL OF ANTIGENtoAND the TRIMIX SONOPORATION
                                  surface                   USING
                                          of avidinylated lipid    MRNA-LOADED MICROBUBBLES FOR
                                                                microbubbles.                                                      sonoporated DCs.
ULTRASOUND-TRIGGERED CANCER IMMUNOTHERAPY.
H. Dewitte, S.V. Lint, C. Heirman, K. Thielemans, S.C.De Smedt, K. Breckpot, and I. Lentacker,    10 and 14 days after inoculation of mice with E.G7-OVA lym
J. Controlled Release 194, 28 (2014).
                                                                                                  randomized in three treatment groups based on tumor volum
       126 | C h a p t e r 5
                                                                                          the
SONOPRINTING AND THE IMPORTANCE OF MICROBUBBLE LOADING FOR THE ULTRASOUND-MEDIATED DELIVERY OF animals   received
                                                                                               NANOPARTICLES.     therapeutic vaccinations with mRNA s
Ine De Cock, Guillaume Lajoinie, Michel Versluis, Stefaan C. De Smedt, and Ine Lentacker.
Biomaterials 83, 294–307 (2016).                                                           show tumor growth as a function of time for mice vaccinate

                                                                                                                              ti
TAA and TriMix mRNA lead to the induction of durable antitumor responses in a
 chemorefractory melanoma patient11,      12
                                            . On the basis of these results, we evaluated the

   Cancer immunotherapy from an ultrasound perspec ve
 potential of simultaneous delivery of TAA mRNA and TriMix via microbubbles and
 ultrasound to induce potent antitumor immune responses in mice, as schematically
 depicted in Figure 1A.

      with Heleen
       Figure      Dewitte,
              1. mRNA        Ine De
                      sonoporation    Cock,
                                   of DCs    Stefaan
                                          using      De Smedt,
                                                mRNA-loaded      Ine Lentacker
                                                            microbubbles and
                                               ultrasound.
       (A) Schematic representation of the use of mRNA-loaded microbubbles, which implode          Figure 7. Therapeutic vaccination of E.G7-OVA-bearing mice with mRNA
        upon exposure to ultrasound and sonoporate the DCs. As a result, both antigen and
                                                                                                                              sonoporated DCs.
            DC modulating proteins are produced by the DC, which can lead to antigen
        presentation and T cell activation. (B) Schematic representation of the production of   10 and 14 days after inoculation of mice with E.G7-OVA lymphoma cells, mice we
       mRNA-loaded microbubbles. Antigen and TriMix mRNA are premixed and complexed             randomized in three treatment
                                                                                                           Figure             groups based
                                                                                                                      7. Therapeutic       on tumor volume
                                                                                                                                        vaccination        as shown in (A) The
                                                                                                                                                       of E.G7-OVA-beari
      to biotinylated cationic liposomes. The resulting mRNA-lipoplexes can then be attached    the animals received therapeutic vaccinations with mRNA sonoporated DCs. Graph
THE POTENTIAL OF ANTIGENtoAND the TRIMIX SONOPORATION
                                  surface                   USING
                                          of avidinylated lipid    MRNA-LOADED MICROBUBBLES FOR
                                                                microbubbles.                                                                sonoporated DCs.
ULTRASOUND-TRIGGERED CANCER IMMUNOTHERAPY.                                                   show  tumor growth as a function of time for mice vaccinated with DCs sonoporate
H. Dewitte, S.V. Lint, C. Heirman, K. Thielemans, S.C.De Smedt, K. Breckpot, and I. Lentacker,       10 and 14 days after inoculation of mice with E.G7-OVA lym
                                                                                            with (B) GFP mRNA (control), (C) OVA mRNA, (D) OVA mRNA and TriMix (DC Tri
J. Controlled Release 194, 28 (2014).
                                                                                                        randomized
                                                                                                and (E) OVA          in three
                                                                                                            mRNA followed  by atreatment    groups
                                                                                                                                2h maturation        based
                                                                                                                                              with LPS      on tumorA volum
                                                                                                                                                       (DC OVA/LPS).  Kapla
      126 | C h a p t e r 5
                                                                                          the
SONOPRINTING AND THE IMPORTANCE OF MICROBUBBLE LOADING FOR THE ULTRASOUND-MEDIATED DELIVERY OF animals    Meier survival
                                                                                                         received
                                                                                               NANOPARTICLES.            curve is shown
                                                                                                                    therapeutic         in (F).
                                                                                                                                    vaccinations with mRNA s
Ine De Cock, Guillaume Lajoinie, Michel Versluis, Stefaan C. De Smedt, and Ine Lentacker.
Biomaterials 83, 294–307 (2016).                                                           show tumor growth as a function of time for mice vaccinate

                                                                                                                                           ti
TAA and TriMix mRNA lead to the induction of durable antitumor responses in a
 chemorefractory melanoma patient11,      12
                                            . On the basis of these results, we evaluated the

   Cancer immunotherapy from an ultrasound perspec ve
 potential of simultaneous delivery of TAA mRNA and TriMix via microbubbles and
 ultrasound to induce potent antitumor immune responses in mice, as schematically
 depicted in Figure 1A.

                                                                                            In accordance to the previous experiment, the tumor growth curv
                                                                                   indicate that sonoporation with antigen results in a significant delay of tu
                                                                                   resulting in a 58% increase in median survival. Interestingly, the slow-
                                                                                   growth was markedly shorter-lived in the DC OVA/LPS group com
                                                                                   unstimulated counterparts (DC OVA). This resulted in merely 35% prolonga
                                                                                   survival of animals in the DC OVA/LPS group compared to the DC GFP gro
                                                                                   stimulation of antigen presentation by sonoporation with OVA and TriMix m
                                                                                   in a pronounced effect on tumor growth: median survival was more than
                                                                                   increase), and complete tumor regression was observed in 2/6 animals
      with Heleen
       Figure      Dewitte,
              1. mRNA        Ine De
                      sonoporation    Cock,
                                   of DCs    Stefaan
                                          using      De Smedt,
                                                mRNA-loaded      Inegroup.
                                                                     Lentacker
                                                            microbubbles and
                                               ultrasound.
       (A) Schematic representation of the use of mRNA-loaded microbubbles, which implode          Figure 7. Therapeutic vaccination of E.G7-OVA-bearing mice with mRNA
        upon exposure to ultrasound and sonoporate the DCs. As a result, both antigen and
                                                                                                                              sonoporated DCs.
            DC modulating proteins are produced by the DC, which can lead to antigen
        presentation and T cell activation. (B) Schematic representation of the production of   10 and 14 days after inoculation of mice with E.G7-OVA lymphoma cells, mice we
       mRNA-loaded microbubbles. Antigen and TriMix mRNA are premixed and complexed             randomized in three treatment
                                                                                                           Figure             groups based
                                                                                                                      7. Therapeutic       on tumor volume
                                                                                                                                        vaccination        as shown in (A) The
                                                                                                                                                       of E.G7-OVA-beari
      to biotinylated cationic liposomes. The resulting mRNA-lipoplexes can then be attached    the animals received therapeutic vaccinations with mRNA sonoporated DCs. Graph
THE POTENTIAL OF ANTIGENtoAND the TRIMIX SONOPORATION
                                  surface                   USING
                                          of avidinylated lipid    MRNA-LOADED MICROBUBBLES FOR
                                                                microbubbles.                                                                sonoporated DCs.
ULTRASOUND-TRIGGERED CANCER IMMUNOTHERAPY.                                                   show  tumor growth as a function of time for mice vaccinated with DCs sonoporate
H. Dewitte, S.V. Lint, C. Heirman, K. Thielemans, S.C.De Smedt, K. Breckpot, and I. Lentacker,       10 and 14 days after inoculation of mice with E.G7-OVA lym
                                                                                            with (B) GFP mRNA (control), (C) OVA mRNA, (D) OVA mRNA and TriMix (DC Tri
J. Controlled Release 194, 28 (2014).
                                                                                                        randomized
                                                                                                and (E) OVA          in three
                                                                                                            mRNA followed  by atreatment    groups
                                                                                                                                2h maturation        based
                                                                                                                                              with LPS      on tumorA volum
                                                                                                                                                       (DC OVA/LPS).  Kapla
      126 | C h a p t e r 5
                                                                                          the
SONOPRINTING AND THE IMPORTANCE OF MICROBUBBLE LOADING FOR THE ULTRASOUND-MEDIATED DELIVERY OF animals    Meier survival
                                                                                                         received
                                                                                               NANOPARTICLES.            curve is shown
                                                                                                                    therapeutic         in (F).
                                                                                                                                    vaccinations with mRNA s
Ine De Cock, Guillaume Lajoinie, Michel Versluis, Stefaan C. De Smedt, and Ine Lentacker.
Biomaterials 83, 294–307 (2016).                                                           show tumor growth as a function of time for mice vaccinate

                                                                                                                                           ti
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