用于DBS手术机器人系统的MRI射频线圈优化设计
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上海交通大学生物医学工程学院

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上海市科学技术委员会“XMR影像引导手术机器人”(21DZ1100301)


Optical Design of MRI Radiofrequency Head Coil for DBS Robotic Surgery System
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1.Shanghai Jiao Tong University;2.School of Biomedical Engineering, Shanghai Jiao Tong University

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    摘要:

    基于一个传统脑深度刺激(deep brain stimulation,DBS)手术机器人配合实时磁共振成像导航的系统,设计了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,并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,相邻线圈基本都优于-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。

    Abstract:

    A high openness eight-channels array head coil is designed based on the needs of a DBS Robotic Surgery System. 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, 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.

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陈素恩,陈浩,张志勇.用于DBS手术机器人系统的MRI射频线圈优化设计[J].生物医学工程学进展,2022,(4):199-206

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  • 收稿日期:2022-11-30
  • 最后修改日期:2022-12-29
  • 录用日期:2022-12-18
  • 在线发布日期: 2023-02-10
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