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9 April 2020 Electromechanical behavior of cartilage tissue during laser-induced stresses and relaxation
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Proceedings Volume 11457, Saratov Fall Meeting 2019: Optical and Nano-Technologies for Biology and Medicine; 114570T (2020) https://doi.org/10.1117/12.2563811
Event: Saratov Fall Meeting 2019: VII International Symposium on Optics and Biophotonics, 2019, Saratov, Russian Federation
Abstract
Laser surgery of the changing cartilage shape is based on photothermal effect on tissue components, which leads to its plasticization and, consequently, reshaping of this tissue. With the rapid laser heating, an optoacoustic wave is generated in the tissue, by the propagation and amplitude of which one can understand the changes in the mechanical properties of the tissue. In this work, data were obtained on the relative time variation of the mechanical stresses of the cartilage tissue upon heating and its temporal characteristics (relaxation time and system response time). A simultaneous recording of the electrical conductivity response of the cartilaginous tissue and mechanical stresses on a pulsed - periodic laser exposure is presented. As a result of this study, it was found that the mechanical stresses in the tissue are in good agreement with the electrical response of the tissue and a drop in resistance. It has been found that the continuation of tissue impedance falling down after the laser exposure switched off causes relaxation of the internal stresses. These studies are the base for the development of a control system for laser operations on cartilage tissue.
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Ekaterina M. Kasianenko and Alexander I. Omelchenko "Electromechanical behavior of cartilage tissue during laser-induced stresses and relaxation", Proc. SPIE 11457, Saratov Fall Meeting 2019: Optical and Nano-Technologies for Biology and Medicine, 114570T (9 April 2020); https://doi.org/10.1117/12.2563811
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