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Abstract #5462

Comparing Transfer Functions in Different Tissues with a Spinal Cord Stimulation System for Estimation of RF Heating during MRI Scans

Xiaoyi Min1 and Shiloh Sison2

1St. Jude Medical, Inc, Sylmar, CA, United States, 2St. Jude Medical, Inc, Sunnyvale, CA, United States

The objective of this study is to compare transfer functions (TFs) of a Spinal Cord Stimulation (SCS) system in high permittivity media (HPM), low permittivity media (LPM) and in spinal cord by using computer simulations. For a SC model, we modeled the anatomical and conductive properties of the lower thoracic (T7-T10) spinal cord. The TF curves in HPM and in SCS follow each other closely. With a SC model, the compound tissue effect around the lead was seen. Lowering HPM conductivity would shift the curve slightly up that with the SC model for in-vivo.

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