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Abstract #1994

Comparison of SAR Distributions around Epicardial and Endocardial Electrodes in Growing Pediatric Patients with Cardiac Pacemakers

Reina Oguchi1, Kyoko Fujimoto2, Kazuhiro Shiraga3, and Kagayaki Kuroda1
1Tokai University, Kanagawa, Japan, 2GE Healthcare, Waukesha, WI, United States, 3Department of Pediatrics, The University of Tokyo Hospital, Tokyo, Japan

Synopsis

Keywords: Safety, SafetyRF-induced SAR distributions around epicardial lead were compared with endocardial lead in the 29-month-old and 6-year-old pediatric anatomical models with cardiac pacemakers. Numerical simulations were performed with a 1.5-T birdcage coil and the pacemaker models segmented from the age-matching patient CT data. In both pediatric models, the simulation with the endocardial lead overall showed lower SAR values compared to that with the endocardial lead. The screw-like electrode attached to the endocardial lead may have resulted in much higher SAR values, compared to the tined-type electrode of the epicardial lead.

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Keywords