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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