Evaluation of Thermal Effect with Cavitation in 1.1 MHz Ultrasound Emission
In this study, experiments were performed for the generation of ultrasound cavitation, which was accompanied by high energy intensity and a temperature increase. First, the ultrasound cavitation was monitored by performing a computer simulation; then, the thermal emission was predicted on the basis of the simulation results. The cavitation generation was simulated by using Matlab 6.0(Mathworks, USA) on the basis of the Keller equation, and the change in the bubble radius was analyzed. On the basis of the bio-heat transfer equation, the increase in the generated cavitation temperature was analyzed by simulating an equilibrium state at 1.1 MHz. To confirm the validity of our simulation result, a Bovine serum albumin (BSA) phantom was developed, and used for generating cavitation; the thermal emission of the cavitation was also studied under the same conditions as those for the simulation. An analysis of the two sets of results using the Pearson correlation indicated that the maximum temperature, region, and diameter of cavitation, and the correlation coefficient for each temperature value at a significance level Of 0.774 - 0.904 were comparable with each other.
HIFU(High intensity focused ultrasound) Cavitation ultrasound thermal effect Thermal distribution
Jae Hyun Park Si Cheol Noh Ju Young Kim Jin Su Kim Jung Hoon Kang Heung Ho Choi
Gimhae Bio-medical Center Gimhae, Korea Department of Radiological Science International University of Korea Jinju, Korea Department of Biomedical Engineering Inje University Gimhae, Korea
国际会议
2011 4th International Congress on Image and Signal Processing(第四届图像与信号处理国际学术会议 CISP 2011)
上海
英文
583-586
2011-10-15（万方平台首次上网日期，不代表论文的发表时间）