A Technique to Evaluate MRI-induced Electric Fields at the Ends of Practical Implanted Lead
推荐理由
基于互易定理与惠更斯原理提出一种有效评估植入物金属导线局部感应电场或感应电压新技术，解耦微观尺度金属导线模拟/测量与宏观人体模拟，简化导线MRI感应加热和植入物感应电压估计过程。
| 文章简介 | |
|---|---|
| 期刊 | IEEE Transactions on Microwave Theory and Techniques |
| 发表年份 | 2014 |
| DOI | 10.1109/TMTT.2014.2376523 |
| 类型 | 研究性工作 |
| 领域 | 磁共振兼容 |
| 引用量 | 134 |
| 推荐信息 | |
|---|---|
| 推荐人 | 张肇源 |
| 审核 | 姜老师 |
| 推荐小组 | 磁共振小组 |
摘要
This paper presents a novel technique for efficient evaluation of magnetic resonance imaging (MRI)-induced electric fields or induced voltages in the vicinity of implanted metallic leads. The technique is based on the reciprocity theorem in conjunction with the Huygens Principle. This approach allows one to decouple the micro-scale metallic lead simulation/measurement from the macro-level phantom human simulations within the MRI scanners. Consequently, the estimation of MRI-induced heating on an implanted lead, and the induced voltage on the pacemaker device can be greatly simplified. In addition, this method clearly explains the induced lead heating mechanism during MRI procedures. Several numerical examples, as well as measurement results are given to demonstrate the efficiency and accuracy of this method.
细分领域