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Abstract #3742

Study of RF-Induced Heating in Active Implantable Medical Devices with Open Impedance Leads at 1.5T MRI

Qingyan Wang1, Lijian Yang1, Matthew Wilcox2, Wenhao Zhang2, and Ji Chen1
1ECE, University of Houston, Houston, TX, United States, 2Abbott, Plano, TX, United States

Synopsis

Keywords: Safety, Safety

Motivation: The RF-induced heating from different configurations of open impedance leads connected to a commercial Pulse Generator (IPG) was investigated. It was observed the RF-induced heating from open impedance leads can behave differently from an intact lead.

Goal(s): Heating in the distal end of open impedance leads need to be estimated.

Approach: Transfer functions and heating measurements were performed.

Results: Most open-impedance configurations led to increased electrode heating with the highest heating occurring when only a single channel of the eight-channel lead was left intact. Additionally, significant differences in heating were found depending on the location of the open impedance.

Impact: Patients with open impedance fractured leads could take MR scan with the help of this study.

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Keywords