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Abstract #2624

Significance of Covering Anatomical Variations for Conservative Assessment of Deposited Power of Leaded Implants in Patients

Lena Kranold1,2, Tolga Goren1, Sunder Rajan3, and Niels Kuster1,2
1IT'IS Foundation, Zurich, Switzerland, 2Department of Information Technology and Electrical Engineering, ETH Zurich, Zurich, Switzerland, 3Center for Devices and Radiological Health (retired), FDA, Silver Spring, MD, United States


Anthropomorphic computational phantoms are used to numerically estimate the potential envelope of intensity and distribution of induced E-fields in patients undergoing MR examination. The impact of anatomical variation of the phantom on medical implant risk assessment is demonstrated for generic transfer functions and lead trajectories representing pacemaker, DBS, SCS, and cochlear implant routings. Results showed that even when only one generic transfer function was considered, each of the 12 anatomical phantoms represented the worst-case for at least one configuration. Thus, the widest available range of anatomical phantoms must be examined to define a conservative safety envelope.

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