在磁激活机器人导管的积极控制过程中进行实时MRI的间接成像和激活
IEEE transactions on bio-medical engineering
|December 10, 2025
概括
这项研究引入了一种交织方法,以减少MRI引导的机器人导管干预中的工件. 该技术有效地从带电流的微线圈中去除图像工件,而不会影响导管控制,从而实现同时成像和执行.
科学领域:
- 医疗成像医学成像
- 机器人技术 机器人技术 机器人技术
- 生物医学工程 生物医学工程
背景情况:
- 磁共振成像 (MRI) 引导的机器人导管干预提高了安全性和控制.
- 带电流的微线圈提供响应性导管启动,但会导致显著的MR图像人工物.
- 现有的方法很难在不影响执行的情况下减轻这些工件.
研究的目的:
- 开发和验证一种交联方法,以减少机器人导管启动引起的MRI器件.
- 确保拟议的方法保持了导管的启动能力.
- 为了在干预过程中同时实现MRI可视化和机器人导管启动.
主要方法:
- 实施高频同步,并将导管启动和MR图像采集交织在一起.
- 使用来自MRI扫描仪的TTL触发器来同步成像和执行固件.
- 用有效电流补偿减少的导管工作周期.
主要成果:
- 图像工件分析显示,在交叉执行和导管休息期间的工件之间没有统计学上显著的差异.
- 导管轨迹跟踪错误在算法的固有误差范围内.
- 该方法在适用于心脏干预的传统和加速MRI序列中被证明是有效的.
结论:
- 拟议的交联方案成功地消除了带电流的执行线圈中的工件.
- 保持了导管启动能力,允许实时控制.
- 这种技术与干预程序相关的加速成像序列兼容.
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