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Abstract #3727

Investigation of RF-induced Heating of Active Implantable Medical Device in the Vicinity of Fragmented Leads under 1.5T MRI

Lijian Yang1, Krishna K.N. Kurpad2, Jianfeng Zheng1, Ran Guo1, Qingyan Wang1, and Ji Chen1
1University of Houston, Houston, TX, United States, 2Micro Systems Engineering, Lake Oswego, OR, United States

Synopsis

Keywords: Safety, Safety

Motivation: Electrically short fragmented leads are sometimes left behind in the human body after the extraction of an active implantable medical device (AIMD). When a new AIMD is implanted near the fragmented leads, the radiofrequency (RF)-induced heating of the newly implanted AIMD could be altered.

Goal(s): Develop a method to evaluate the RF-induced heating of AIMD with fragmented leads in the vicinity.

Approach: We propose to use the electric field distribution which includes the presence of the fragmented leads with the AIMD transfer function model for RF-induced heating evaluation.

Results: The proposed method can effectively predict the RF-induced heating for AIMDs near fragmented leads.

Impact: It was observed that the RF-induced heating for AIMD system can be altered by the nearby fragmented leads.

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Keywords