摘要
阐述了遗传算法优化多点超声聚焦的方法以及球面相控阵声场计算方法。对实验室研发的256阵元相控阵聚焦超声治疗系统作了简介。利用此遗传算法和声场计算方法,对轴上和离轴单焦点以及轴对称六焦点和非轴对称四焦点进行了256阵元相控阵的声场仿真,并观察了实验室研发的256阵元相控阵聚焦超声治疗系统作用于有机玻璃和透明仿体的实验结果。用遗传算法和声场计算方法的仿真和系统实验结果表明,此方法可在实际聚焦手术中准确地控制3维单焦点和3维多焦点。
The genetic optimal algorithm and sound field calculation approach for the spherical-section phased array are presented in this paper. The in-house manufactured 256-element phased array focused ultrasound surgery system is briefly described. The on-axis single focus and off-axis single focus are simulated along with the axis-symmetric six-focus patter and the axis-asynmletric four-focus pattern using a 256-element phased array and the genetic optimal algorithm and sound field calculation appr^mch. The experimental results of the described 256-element phased array focused uhrasound surgery systean acting on organic glass and phantom are also analyzed. The results of the simulations and experiments confirm the applicability of the genetic algorithm and field calculation approaches in accurately steering three dimensional loci and focus.
出处
《生物医学工程学杂志》
EI
CAS
CSCD
北大核心
2008年第5期1093-1097,共5页
Journal of Biomedical Engineering
基金
国家自然科学基金资助项目(10674108)
关键词
遗传算法
球面相控阵
聚焦超声手术
Genetic algorithm（GA） Spherical-section phased array Focused ultrasound surgery（FUS）
