Abstract #2283

Radio-Frequency Induced Heating of Hip and Knee Implants in the Cylindrical and Planar Systems

Kyoko Fujimoto¹, Tayeb A Zaidi¹, Dave Lampman², Josha W Guag¹, Shawn Etheridge², Hideta Habara³, and Sunder S Rajan¹

¹Center for Devices and Radiological Health, US Food and Drug Administration, Silver Spring, MD, United States, ²Hitachi Healthcare Americas, Twinsburg, OH, United States, ³Healthcare Business Unit, Hitachi, Ltd., Tokyo, Japan

Radio-Frequency (RF) induced thermal injury is a common adverse event reported to US Food and Drug Administration. RF-induced heating risk depends on the interaction of implantable medical devices with electric field distribution in the MRI systems. A study showed that RF-induced heating of a neuromodulation device was much lower in the planar system compared to the cylindrical system. In this study, the hip and knee implants were studied in an anatomical human model at a 1.2T planar system and a 1.5T cylindrical system.

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