Movement Registration for PRF Based MR Thermometry
Movement Registration for PRF Based MR Thermometry
复制标题
基于 PRF 的 MR 测温的运动注册
DOI：
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发表时间：
2002
期刊：
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通讯作者：
M. Vogel
中科院分区：
文献类型：
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作者：
M. Vogel
核磁共振测温是一种实时监测和控制热疗干预的工具。基于PRF的MR测温是测量温度变化最精确的方法。虽然这种方法在没有运动的情况下是相当准确的，但它不能完全用于所有的临床目标。尤其是在腹部，运动无处不在。因此，我们研究了实时图像配准是否可以解决基于PRF的测温中与运动相关的问题。用呼吸性肝运动模型对该配准方法进行了离体试验。结果表明，尽管噪声略有增加，但该方法允许基于定量PRF的MR
MR thermometry is a tool for real-time monitoring and control of hyperthermic interventions. MR Thermometry based on PRF is the most accurate method for measuring temperature changes. While this method is quite accurate in the absence of motion, it cannot be fully employed with all clinical targets. Especially in the abdomen, motion is ubiquitous. Therefore, we investigated whether real-time image registration could resolve the motion related problems with PRF based thermometry. The registration method was tested ex vivo with a model for respiratory liver motion. Results showed that, although noise increases slightly, this method allows for quantitative PRF based MR