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Noninvasive temperature estimation by detecting echo-strain change including thermal expansion 被引量:3

Noninvasive temperature estimation by detecting echo-strain change including thermal expansion
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摘要 This article studies the feasibility of noninvasive temperature estimation by detecting echo-strain including thermal expansion in therapeutic ultrasound treatment. This technique evaluates distributions of echo-strain and temperature inside the tissue by detecting echo signals pre- and post-heating, in combination with the temperature dependence of sound speed and thermal expansion. In the computer simulation and experimental study, echo signals pre- and post- heating are acquired and then the temperature elevation is evaluated by correlation analysis. Results demonstrate that this technique can effectively extend the measured temperature range up to 75℃ with an accuracy of±2 ℃. This article studies the feasibility of noninvasive temperature estimation by detecting echo-strain including thermal expansion in therapeutic ultrasound treatment. This technique evaluates distributions of echo-strain and temperature inside the tissue by detecting echo signals pre- and post-heating, in combination with the temperature dependence of sound speed and thermal expansion. In the computer simulation and experimental study, echo signals pre- and post- heating are acquired and then the temperature elevation is evaluated by correlation analysis. Results demonstrate that this technique can effectively extend the measured temperature range up to 75℃ with an accuracy of±2 ℃.
机构地区 Institute of Acoustics
出处 《Chinese Physics B》 SCIE EI CAS CSCD 2007年第9期2745-2751,共7页 中国物理B(英文版)
基金 Project supported by the National Natural Science Foundation of China (Grant No 10474044) and the Program for New Century Excellent Talents in University of China (CNCET).
关键词 echo-strain noninvasive temperature estimation therapeutic ultrasound echo-strain, noninvasive temperature estimation, therapeutic ultrasound
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