Noninvasive Temperature Estimation Using Ultrasound Based on Frequency-Shift
A noninvasive technique for monitoring tissue temperature changes due to heating fields using ultrasound is described in this paper. The approach is based on the discrete scattering model used in the tissue characterization literature and the observation that most biological tissue is semi-regular scattering lattices. At the frequency- shift aspect, we use digital signal process and computational program design to achieve Autoregressive Power Spectrum Density (AR-PSD) algorithm of ultrasound echo. By analyzing reflected signal based on back-scattered frequency shift model, we can obtain the minimal frequency-shift and acquire information related with temperature to estimate the change of the temperature.
Noninvasive temperature estimation averagescatter model frequency-shift Autoregressive Power Spectrum Density (AR-PSD)
CHEN Zhencheng BAI Jialian
Department of Biomedical Engineering, School of Info-Physics and Geomatics Engineering, Central South University, Changsha, 410083
国际会议
北京
英文
2007-08-05（万方平台首次上网日期，不代表论文的发表时间）