用于DBS手术机器人系统的MRI射频线圈优化设计  

Optical Design of MRI Radiofrequency Head Coil for DBS Robotic Assisted Surgery System

作　　者：陈素恩 陈浩 张志勇[1,2] CHEN Suen;CHEN Hao;ZHANG Zhiyong(School of Biomedical Engineering,Shanghai Jiao Tong University,Shanghai 200030,China;Insititute of Medical Robotics,Shanghai Jiao Tong University,Shanghai 200030,China)

机构地区：[1]上海交通大学生物医学工程学院,上海200030 [2]上海交通大学医疗机器人研究院,上海200030

出　　处：《生物医学工程学进展》2022年第4期199-206,共8页Progress in Biomedical Engineering

基　　金：上海市科学技术委员会“XMR影像引导手术机器人”(21DZ1100301)。

摘　　要：基于一个传统脑深度刺激术(Deep Brain Stimulation,DBS)手术机器人配合实时磁共振成像(Magnetic Resonance Imaging,MRI)导航系统,设计一款有高开放性的八通道相控阵列头部线圈。对磁共振接收线圈链路功能进行分析,配合线圈开放性需求,运用Proteus软件设计功能电路并集成于3.76 cm×3.54 cm空间内,将电路应用于平面线圈阵列并对人体腹部成像验证可行性。确立硬件电路部分可行性后,针对手术机器人系统进针空间需求,对当前头部射频接收线圈结构进行高开放性的优化并运用HFSS仿真软件设计建模。仿真结果显示反射系数均达-40 dB,相邻线圈基本优于-10 dB。为DBS手术机器人实时MRI影像导航提供高信噪比与开放性的射频接收线圈奠定技术基础。Based on the needs of a DBS Robotic Surgery System,a high openness eight-channels array head coil is designed.The function circuit of this array coil is successfully integrated into a rectangular space of 3.76 cm×3.54 cm to save space after simplifying typical RF receive chain in the MRI system,which feasibility is proved by imaging experiment.In order to meet the needs of the needle insertion space for the DBS surgical robot,this paper optimize the current head receive coil.The eight-channels phased array coil with highly open space on both top and front size is designed and simulated by HFSS.Its return losses of all coils reach-40dB,and the adjacent channels are successfully decoupled.This coil has a good feasibility for the DBS robotic surgery system with real-time MRI navigation.

关 键 词：磁共振成像 DBS手术机器人系统 相控阵列线圈 头部接收线圈 开放性设计 

分 类 号：R318[医药卫生—生物医学工程] R445[医药卫生—基础医学]