Noninvasive thermometer for HIFU and its scaling.
Acoustic-inversion method for a noninvasive temperature measurement in tissue is presented. A set of B-scan operating in M-mode was used as a signal-equipment. The echoes reflected from an assigned surface in tissue were acquired before and after heating, and the corresponding spectra were then obtained by FFT. In order to conduct the acoustic-inversion method, a theoretical formula given by authors in another paper was invoked. The optimization algorithm was implemented to fit the spectra to the measured data and calculate changes in temperature.
Qian
Zu Wen
ZW
National Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080, PR China. qianzw@mail.ioa.ac.cn <qianzw@mail.ioa.ac.cn>
Xiong
Liulin
L
Yu
Jinshen
J
Shao
Daoyuan
D
Zhu
Houqing
H
Wu
Xiaodong
X
D000818:Animals; D001831:Body Temperature / Q000502:physiology* / Q000528:radiation effects; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006801:Humans; D066298:In Vitro Techniques; D018482:Muscle, Skeletal / Q000502:physiology* / Q000528:radiation effects*; D011817:Rabbits; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013552:Swine; D013817:Thermography / Q000295:instrumentation* / Q000379:methods*; D014464:Ultrasonic Therapy / Q000295:instrumentation* / Q000379:methods*