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Abstract #4916

A Comparison of the Magnetic Force of MR-Conditional Cardiac Implants

Mabel Shehada1, Emile Shehada2, Ramez Shehada3, and David Prutchi4
1UCSD, San Diego, CA, United States, 2Yale University, New haven, CT, United States, 3Medical Technology Laboratories, La Mirada, CA, United States, 4Impulse Dynamics, MARLTON, NJ, United States

Synopsis

For implant systems composed of an implantable pulse generator (IPG) and lead(s), the MR-Conditional labeling specifies a magnetic spatial gradient for the whole system but not for its individual components. To identify the component experiencing the highest magnetic force, thus dictating the safe limit, we measured multiple IPGs and leads per ASTM F2052-15. The highest force on leads under 4.77T/m, 20T/m, and 50T/m was 0.003N, 0.021N, and 0.053N, respectively. The lowest IPG forces were 0.080N, 0.529N, and 1.322N. For any magnetic spatial gradient, the lowest IPG force was 2,480% greater than the highest lead force.

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