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Rosnitskiy PB, Tsysar SA, Karzova MM, Buravkov SV, Malkov PG, Danilova NV, Ponomarchuk EM, Sapozhnikov OA, Khokhlova TD, Schade GR, Maxwell AD, Wang YN, Kadrev AV, Chernyaev AL, Okhobotov DA, Kamalov AA, Khokhlova VA. Pilot ex vivo study on non-thermal ablation of human prostate adenocarcinoma tissue using boiling histotripsy. Ultrasonics 2023; 133:107029. [PMID: 37207594 PMCID: PMC10438901 DOI: 10.1016/j.ultras.2023.107029] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 04/27/2023] [Accepted: 05/01/2023] [Indexed: 05/21/2023]
Abstract
Focused ultrasound technologies are of growing interest for noninvasive ablation of localized prostate cancer (PCa). Here we present the results of the first case study evaluating the feasibility of non-thermal mechanical ablation of human prostate adenocarcinoma tissue using the boiling histotripsy (BH) method on ex vivo tissue. High intensity focused ultrasound field was generated using a 1.5-MHz custom-made transducer with nominal F#=0.75. A sonication protocol of 734 W acoustic power, 10-ms long BH-pulses, 30 pulses per focal spot, 1 % duty cycle, and 1 mm distance between single foci was tested in an ex vivo human prostate tissue sample containing PCa. The protocol used here has been successfully applied in the previous BH studies for mechanical disintegration of ex vivo prostatic human tissue with benign hyperplasia. BH treatment was monitored using B-mode ultrasound. Post-treatment histologic analysis demonstrated BH produced liquefaction of the targeted tissue volume. BH treated benign prostate parenchyma and PCa had similar tissue fractionation into subcellular fragments. The results of the study demonstrated that PCa tumor tissue can be mechanically ablated using the BH method. Further studies will aim on optimizing protocol parameters to accelerate treatment while maintaining complete destruction of the targeted tissue volume into subcellular debris.
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Affiliation(s)
- P B Rosnitskiy
- Lomonosov Moscow State University, Physics Faculty, Moscow, Russia.
| | - S A Tsysar
- Lomonosov Moscow State University, Physics Faculty, Moscow, Russia
| | - M M Karzova
- Lomonosov Moscow State University, Physics Faculty, Moscow, Russia
| | - S V Buravkov
- Lomonosov Moscow State University, Faculty of Fundamental Medicine, Moscow, Russia
| | - P G Malkov
- Lomonosov Moscow State University, Medical Research and Educational Center, Moscow, Russia
| | - N V Danilova
- Lomonosov Moscow State University, Medical Research and Educational Center, Moscow, Russia
| | - E M Ponomarchuk
- Lomonosov Moscow State University, Physics Faculty, Moscow, Russia
| | - O A Sapozhnikov
- Lomonosov Moscow State University, Physics Faculty, Moscow, Russia; University of Washington, Applied Physics Laboratory, Center for Industrial and Medical Ultrasound, Seattle, WA, USA
| | - T D Khokhlova
- University of Washington School of Medicine, Department of Medicine, Division of Gastroenterology, Seattle, WA, USA
| | - G R Schade
- University of Washington School of Medicine, Department of Urology, Seattle, WA, USA
| | - A D Maxwell
- University of Washington School of Medicine, Department of Urology, Seattle, WA, USA
| | - Y-N Wang
- University of Washington, Applied Physics Laboratory, Center for Industrial and Medical Ultrasound, Seattle, WA, USA
| | - A V Kadrev
- Lomonosov Moscow State University, Medical Research and Educational Center, Moscow, Russia; Russian Medical Academy of Continuous Professional Education, Diagnostic Ultrasound Division, Moscow, Russia
| | - A L Chernyaev
- Pulmonology Scientific Research Institute, Moscow, Russia
| | - D A Okhobotov
- University of Washington, Applied Physics Laboratory, Center for Industrial and Medical Ultrasound, Seattle, WA, USA
| | - A A Kamalov
- University of Washington, Applied Physics Laboratory, Center for Industrial and Medical Ultrasound, Seattle, WA, USA
| | - V A Khokhlova
- Lomonosov Moscow State University, Physics Faculty, Moscow, Russia; University of Washington, Applied Physics Laboratory, Center for Industrial and Medical Ultrasound, Seattle, WA, USA
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