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Science Newsletter of the Faculty fo Physics
This is a new bulletin, which, as we hope, will bring fresh, updated information on scientific news, research activities, and related events in the life of our department to our staff members, undegraduate and graduate students, postdocs, collaborators and partners. We greatly hope that this Science Newsletter will help us to find new partners in research and shorten the way from fundamental research to applications and innovations, from our fundamental discoveries to their successful implementations in not too distant future.
XIV National School-Seminar "Wave phenomena in inhomogeneous media"
The conference papers from the School-Seminar «Waves-2014» will be submitted for publishing in the Memoirs of the Faculty of Physics journal.
| Journals » Memoirs of the Faculty of Physics » Issues » 2016 » # 6 |
Comparison of thermal ablation criteria for nonlinear regimes of ultrasound irradiation of biological tissue using a multi-element phased array
Y. S. Andriyakhina, I.V. Sinilschikov, P.V. Yuldashev, V. A. Khokhlova
Department of acoustics, Faculty of Physics, Lomonosov Moscow State University. Moscow 119991, RussiaIn this paper different criteria of thermal ablation induced by high intensity focused ultrasound in clinically significant volumes of biological tissue were compared. Sonications using a multi-element ultrasound array and various nonlinear focusing regimes were considered in numerical experiment. Sonication of tissue was maintained until thermal dose reached a threshold value at the circle of a certain radius. The threshold temperature was chosen so that the sonication stopped at the same time when using the criteria of temperature or dose. Threshold temperatures equivalent to the thermal dose threshold achieved at the end of the heating were obtained. Volumes of thermal lesions in tissue were calculated using both the criteria of thermal dose and temperature. It was shown that the use of the threshold temperature criterion corresponded with good accuracy to the thermal dose criterion in case of the uniform heating of the tissue volume.
| URL: | http://uzmu.phys.sunmarket.com/abstract/2016/6/166701 |
| PACS: | 43.20.Bi Mathematical theory of wave propagation |
| UDC: | |
| Цитата: | Ю.С. Андрияхина, И.В. Синильщиков, П. В. Юлдашев, В.А. Хохлова. Сравнение критериев тепловой абляции при нелинейных режимах облучения биологической ткани с использованием многоэлементной ультразвуковой решетки // Учен. зап. физ. фак-та Моск. ун-та. 2016. № 6. 166701 |