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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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