Numerical simulation of a method to reduce high cranial pressure in high intensity focused ultrasound for transcranial brain therapy
编号：97
稿件编号：39 访问权限：仅限参会人
更新：2021-11-08 15:58:52
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口头报告
报告开始：2021年11月14日 20:50 （Asia/Shanghai）
报告时间：25min
所在会议：[PS1] Plenary Session 1 » [CT1] Workshop on CT
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摘要
Transcranial high intensity focused ultrasound (HIFU) may form hot spots with higher acoustic pressure and temperature in the skull, causing damage to the skull and surrounding tissues. This paper optimized the existing cranial high pressure reduction technology with phase regulation based on the time reversal method and proposed the high cranial pressure reduction algorithm based on particle swarm optimization (PSO-SHPRA), which is an algorithm of adding amplitude modulation to excitation signal and using particle swarm optimization (PSO) to optimize the amplitude modulation coefficients in an iterative manner. To verify the effectiveness of the algorithm, we used the Westervelt nonlinear acoustic propagation equation to carry out numericals based on a transcranial ultrasound therapy model. The results show that reducing the high cranial pressure is feasible when focusing the ultrasound on the intracranial target area. This paper could provide references for clinical therapeutic planning during the HIFU transcranial ultrasound therapy.
关键字
HIFU,transcranial,time reversal,reduce high cranial pressure,PSO
报告人
Jiaqi Wang
University of Science and Technology of ChinaDepartment of Electronic Engineering and Information
University of Science and Technology of China
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