Measuring temperature rise in phantom to determine high power high-intensity focused ultrasound sound field
To investigate high-power High-Intensity FocusedUltrasound (HIFU) generated acoustic field and thecharacteristic and significance of the method of acoustic fieldmeasurement. In this paper, thermocouple measurements ofHIFU using power of 40W, 70W, 100W, 150W and 200W. Theirradiation time at the phantom focal region was 1 second fortemperature field distribution. The relationship betweeninstantaneous temperature rise and the acoustic intensity wasused to determine HIFU acoustic field distribution. The resultsshowed that, as the acoustic power increases, the radius of thefocal region gradually grows toward the width of -6dB; the focalregion is widest when the acoustic power is 100W. The focalplane area and acoustic surface area increases with the increasein power. The use of thermocouples to measure the instantaneoustemperature rise in the phantom focal region to describe thehigh-intensity acoustic field distribution of HIFU is a feasiblemethod.
Faqi Li Jie Chen Deping Zeng Qi Wang Tao Zeng
Sate Key Laboratory of Medical Ultrasound Engineering Co-founded by Chongqing and Ministry of Scienc National Engineering Research Center of Ultrasound Medicine Chongqing 400016, PR China
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）