Shock wave lithotripsy (SWL) has been widely used for non-invasive treatment of kidney stones. Cavitation plays an important role in stone fragmentation, yet it may also contribute to renal injury during SWL. It is therefore crucial to determine the spatiotemporal distributions of cavitation activities to maximize stone fragmentation while minimizing tissue injury. Traditional cavitation detection methods include high-speed optical imaging, active cavitation mapping (ACM), and passive cavitation mapping (PCM). While each of the three methods provides unique information about the dynamics of the bubbles, PCM has most practical applications in biological tissues. To image the dynamics of cavitation bubble collapse, we previously developed a sliding-window PCM (SW-PCM) method to identify each bubble collapse with high temporal and spatial resolution. In this work, to further validate and optimize the SW-PCM method, we have developed tri-modality cavitation imaging that includes three-dimensional high-speed optical imaging, ACM, and PCM seamlessly integrated in a single system. Using the tri-modality system, we imaged and analyzed laser-induced single cavitation bubbles in both free field and constricted space and shock wave-induced cavitation clusters. Collectively, our results have demonstrated the high reliability and spatial-temporal accuracy of the SW-PCM approach, which paves the way for the future in vivo applications on large animals and humans in SWL.
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February 2021
February 19 2021
Tri-modality cavitation mapping in shock wave lithotripsy Available to Purchase
Mucong Li
;
Mucong Li
a)
1
Department of Biomedical Engineering, Duke University
, Durham, North Carolina 27708, USA
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Georgy Sankin;
Georgy Sankin
2
Department of Mechanical Engineering and Materials Science, Duke University
, Durham, North Carolina 27708, USA
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Tri Vu;
Tri Vu
1
Department of Biomedical Engineering, Duke University
, Durham, North Carolina 27708, USA
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Junjie Yao;
Junjie Yao
1
Department of Biomedical Engineering, Duke University
, Durham, North Carolina 27708, USA
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Pei Zhong
Pei Zhong
2
Department of Mechanical Engineering and Materials Science, Duke University
, Durham, North Carolina 27708, USA
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Mucong Li
1,a)
Georgy Sankin
2
Tri Vu
1
Junjie Yao
1
Pei Zhong
2
1
Department of Biomedical Engineering, Duke University
, Durham, North Carolina 27708, USA
2
Department of Mechanical Engineering and Materials Science, Duke University
, Durham, North Carolina 27708, USA
a)
Electronic mail: [email protected], ORCID: 0000-0003-1311-5774.
J. Acoust. Soc. Am. 149, 1258–1270 (2021)
Article history
Received:
August 31 2020
Accepted:
January 28 2021
Citation
Mucong Li, Georgy Sankin, Tri Vu, Junjie Yao, Pei Zhong; Tri-modality cavitation mapping in shock wave lithotripsy. J. Acoust. Soc. Am. 1 February 2021; 149 (2): 1258–1270. https://doi.org/10.1121/10.0003555
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