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Li H, Li X, Collado-Lara G, Lattwein KR, Mastik F, Beurskens R, van der Steen AFW, Verweij MD, de Jong N, Kooiman K. Coupling Two Ultra-high-Speed Cameras to Elucidate Ultrasound Contrast-Mediated Imaging and Therapy. ULTRASOUND IN MEDICINE & BIOLOGY 2023; 49:388-397. [PMID: 36241587 DOI: 10.1016/j.ultrasmedbio.2022.08.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 08/26/2022] [Accepted: 08/31/2022] [Indexed: 06/16/2023]
Abstract
Ultrasound contrast-mediated medical imaging and therapy both rely on the dynamics of micron- and nanometer-sized ultrasound cavitation nuclei, such as phospholipid-coated microbubbles and phase-change droplets. Ultrasound cavitation nuclei respond non-linearly to ultrasound on a nanosecond time scale that necessitates the use of ultra-high-speed imaging to fully visualize these dynamics in detail. In this study, we developed an ultra-high-speed optical imaging system that can record up to 20 million frames per second (Mfps) by coupling two small-sized, commercially available, 10-Mfps cameras. The timing and reliability of the interleaved cameras needed to achieve 20 Mfps was validated using two synchronized light-emitting diode strobe lights. Once verified, ultrasound-activated microbubble responses were recorded and analyzed. A unique characteristic of this coupled system is its ability to be reconfigured to provide orthogonal observations at 10 Mfps. Acoustic droplet vaporization was imaged from two orthogonal views, by which the 3-D dynamics of the phase transition could be visualized. This optical imaging system provides the temporal resolution and experimental flexibility needed to further elucidate the dynamics of ultrasound cavitation nuclei to potentiate the clinical translation of ultrasound-mediated imaging and therapy developments.
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Affiliation(s)
- Hongchen Li
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands.
| | - Xiufeng Li
- Section of Medical Imaging, Department of Imaging Physics, Delft University of Technology, Delft, The Netherlands
| | - Gonzalo Collado-Lara
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Kirby R Lattwein
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Frits Mastik
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Robert Beurskens
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Antonius F W van der Steen
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands; Section of Medical Imaging, Department of Imaging Physics, Delft University of Technology, Delft, The Netherlands
| | - Martin D Verweij
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands; Section of Medical Imaging, Department of Imaging Physics, Delft University of Technology, Delft, The Netherlands
| | - Nico de Jong
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands; Section of Medical Imaging, Department of Imaging Physics, Delft University of Technology, Delft, The Netherlands
| | - Klazina Kooiman
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
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Läubli NF, Gerlt MS, Wüthrich A, Lewis RTM, Shamsudhin N, Kutay U, Ahmed D, Dual J, Nelson BJ. Embedded Microbubbles for Acoustic Manipulation of Single Cells and Microfluidic Applications. Anal Chem 2021; 93:9760-9770. [PMID: 34228921 PMCID: PMC8295982 DOI: 10.1021/acs.analchem.1c01209] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 06/17/2021] [Indexed: 11/29/2022]
Abstract
Acoustically excited microstructures have demonstrated significant potential for small-scale biomedical applications by overcoming major microfluidic limitations. Recently, the application of oscillating microbubbles has demonstrated their superiority over acoustically excited solid structures due to their enhanced acoustic streaming at low input power. However, their limited temporal stability hinders their direct applicability for industrial or clinical purposes. Here, we introduce the embedded microbubble, a novel acoustofluidic design based on the combination of solid structures (poly(dimethylsiloxane)) and microbubbles (air-filled cavity) to combine the benefits of both approaches while minimizing their drawbacks. We investigate the influence of various design parameters and geometrical features through numerical simulations and experimentally evaluate their manipulation capabilities. Finally, we demonstrate the capabilities of our design for microfluidic applications by investigating its mixing performance as well as through the controlled rotational manipulation of individual HeLa cells.
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Affiliation(s)
- Nino F. Läubli
- Department
of Mechanical and Process Engineering, ETH Zurich, Multi-Scale Robotics Lab, Institute of Robotics and Intelligent Systems, Tannenstrasse 3, 8092 Zurich, Switzerland
- Molecular
Neuroscience Group, Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, CB3 0AS Cambridge, United Kingdom
| | - Michael S. Gerlt
- Department
of Mechanical and Process Engineering, ETH Zurich, Mechanics and Experimental Dynamics, Institute of Mechanical Systems, Tannenstrasse 3, 8092 Zurich, Switzerland
| | - Alexander Wüthrich
- Department
of Mechanical and Process Engineering, ETH Zurich, Multi-Scale Robotics Lab, Institute of Robotics and Intelligent Systems, Tannenstrasse 3, 8092 Zurich, Switzerland
| | - Renard T. M. Lewis
- Department
of Biology, ETH Zurich, Institute of Biochemistry, Otto-Stern-Weg 3, 8093 Zurich, Switzerland
| | - Naveen Shamsudhin
- Department
of Mechanical and Process Engineering, ETH Zurich, Multi-Scale Robotics Lab, Institute of Robotics and Intelligent Systems, Tannenstrasse 3, 8092 Zurich, Switzerland
| | - Ulrike Kutay
- Department
of Biology, ETH Zurich, Institute of Biochemistry, Otto-Stern-Weg 3, 8093 Zurich, Switzerland
| | - Daniel Ahmed
- Department
of Mechanical and Process Engineering, ETH Zurich, Multi-Scale Robotics Lab, Institute of Robotics and Intelligent Systems, Tannenstrasse 3, 8092 Zurich, Switzerland
- Department
of Mechanical and Process Engineering, ETH Zurich, Acoustic Robotics Systems Lab, Säumerstrasse 4, 8803 Rüschlikon, Switzerland
| | - Jürg Dual
- Department
of Mechanical and Process Engineering, ETH Zurich, Mechanics and Experimental Dynamics, Institute of Mechanical Systems, Tannenstrasse 3, 8092 Zurich, Switzerland
| | - Bradley J. Nelson
- Department
of Mechanical and Process Engineering, ETH Zurich, Multi-Scale Robotics Lab, Institute of Robotics and Intelligent Systems, Tannenstrasse 3, 8092 Zurich, Switzerland
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Versluis M, Stride E, Lajoinie G, Dollet B, Segers T. Ultrasound Contrast Agent Modeling: A Review. ULTRASOUND IN MEDICINE & BIOLOGY 2020; 46:2117-2144. [PMID: 32546411 DOI: 10.1016/j.ultrasmedbio.2020.04.014] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 04/11/2020] [Accepted: 04/14/2020] [Indexed: 05/21/2023]
Abstract
Ultrasound is extensively used in medical imaging, being safe and inexpensive and operating in real time. Its scope of applications has been widely broadened by the use of ultrasound contrast agents (UCAs) in the form of microscopic bubbles coated by a biocompatible shell. Their increased use has motivated a large amount of research to understand and characterize their physical properties as well as their interaction with the ultrasound field and their surrounding environment. Here we review the theoretical models that have been proposed to study and predict the behavior of UCAs. We begin with a brief introduction on the development of UCAs. We then present the basics of free-gas-bubble dynamics upon which UCA modeling is based. We review extensively the linear and non-linear models for shell elasticity and viscosity and present models for non-spherical and asymmetric bubble oscillations, especially in the presence of surrounding walls or tissue. Then, higher-order effects such as microstreaming, shedding and acoustic radiation forces are considered. We conclude this review with promising directions for the modeling and development of novel agents.
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Affiliation(s)
- Michel Versluis
- Physics of Fluids Group, MESA+ Institute for Nanotechnology, Technical Medical (TechMed) Center, University of Twente, Enschede, the Netherlands.
| | - Eleanor Stride
- Department of Engineering Science, Institute of Biomedical Engineering, University of Oxford, Oxford, UK
| | - Guillaume Lajoinie
- Physics of Fluids Group, MESA+ Institute for Nanotechnology, Technical Medical (TechMed) Center, University of Twente, Enschede, the Netherlands
| | - Benjamin Dollet
- Centre National de la Recherche Scientifique (CNRS), Laboratoire Interdisciplinaire de Physique (LIPhy), Université Grenoble Alpes, Grenoble, France
| | - Tim Segers
- Physics of Fluids Group, MESA+ Institute for Nanotechnology, Technical Medical (TechMed) Center, University of Twente, Enschede, the Netherlands
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Supponen O, Upadhyay A, Lum J, Guidi F, Murray T, Vos HJ, Tortoli P, Borden M. The effect of size range on ultrasound-induced translations in microbubble populations. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2020; 147:3236. [PMID: 32486824 PMCID: PMC7205472 DOI: 10.1121/10.0001172] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 03/17/2020] [Accepted: 04/13/2020] [Indexed: 06/11/2023]
Abstract
Microbubble translations driven by ultrasound-induced radiation forces can be beneficial for applications in ultrasound molecular imaging and drug delivery. Here, the effect of size range in microbubble populations on their translations is investigated experimentally and theoretically. The displacements within five distinct size-isolated microbubble populations are driven by a standard ultrasound-imaging probe at frequencies ranging from 3 to 7 MHz, and measured using the multi-gate spectral Doppler approach. Peak microbubble displacements, reaching up to 10 μm per pulse, are found to describe transient phenomena from the resonant proportion of each bubble population. The overall trend of the statistical behavior of the bubble displacements, quantified by the total number of identified displacements, reveals significant differences between the bubble populations as a function of the transmission frequency. A good agreement is found between the experiments and theory that includes a model parameter fit, which is further supported by separate measurements of individual microbubbles to characterize the viscoelasticity of their stabilizing lipid shell. These findings may help to tune the microbubble size distribution and ultrasound transmission parameters to optimize the radiation-force translations. They also demonstrate a simple technique to characterize the microbubble shell viscosity, the fitted model parameter, from freely floating microbubble populations using a standard ultrasound-imaging probe.
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Affiliation(s)
- Outi Supponen
- Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, 8092 Zurich, Switzerland
| | - Awaneesh Upadhyay
- Department of Mechanical Engineering, University of Colorado Boulder, 1111 Engineering Drive, Boulder, Colorado 80309, USA
| | - Jordan Lum
- Department of Mechanical Engineering, University of Colorado Boulder, 1111 Engineering Drive, Boulder, Colorado 80309, USA
| | - Francesco Guidi
- Department of Information Engineering, University of Florence, Via di S. Marta 3, 50139 Florence, Italy
| | - Todd Murray
- Department of Mechanical Engineering, University of Colorado Boulder, 1111 Engineering Drive, Boulder, Colorado 80309, USA
| | - Hendrik J. Vos
- Department of Biomedical Engineering, Erasmus MC, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands
| | - Piero Tortoli
- Department of Information Engineering, University of Florence, Via di S. Marta 3, 50139 Florence, Italy
| | - Mark Borden
- Department of Mechanical Engineering, University of Colorado Boulder, 1111 Engineering Drive, Boulder, Colorado 80309, USA
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