Abstract #0919

MRI RF-Induced Pacemaker Lead Heating: Effect of Single vs Dual-lead Systems

Shi Feng¹, Shiloh Sison², Jazmine Garcia³, Gabriel Mouchawar³, and Richard Williamson³

¹Hardware development, St. Jude Medical, Sylmar, CA, United States, ²St. Jude Medical, Sunnyvale, CA, United States, ³St. Jude Medical, Sylmar, CA, United States

Metallic leads of an implanted electronic device such as a pacemaker may behave as antennae in the strong radio frequency electromagnetic field of MRI. The induced current surrounding the electrodes may heat the local tissue. The MRI-induced tissue heating around the electrodes of a pacemaker have only been investigated for pacemakers employing a single lead. In this paper, we examine the MRI-induced temperature rise (TR) of the tip electrode(s) associated with a pacemaker system with two St. Jude Medical Tendril 2088 STS leads, and compare it to the single result. Both transfer function and in vitro temperature rise are investigated.

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