Multi-objective control for multi-elements HIFU surgery
多阵元高强度聚焦超声多目标控制方法研究

Multi\|objective control methods are used for noninvasive multi\|elements high intensity focusing ultrasonic(HIFU) surgery to obtain optimal space/time temperature control properties. The fuzzy logic controller is proposed and implemented in a closed\|loop temperature control system to achieve good temperature response. The optimal acoustic field patterns are formed to assure ideal spatial energy distributions for HIFU surgery. In addition, the identification of the important parameter and switch mode techniques are effectively used in the HIFU control system. By considering nonlinear effects, the simulation results show satisfactory control properties. The experiments followed also show quite good temperature response and effectiveness of the multi-objective methods.