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Abstract #5454

Predictive modelling for Sacral Nerve Stimulation Lead heating - Pathway factors and their effect on MRI RF-induced stimulation lead heating

Scott Kalpin1, Norbert Kaula2, and Ramez Shehada3

1Systems Engineering, Nuvectra Medical, Broomfield, CO, United States, 2R&D, Nuvectra Medical, Broomfield, CO, United States, 3R&D, Medical Technology Labs, La Mirada, CA, United States

A formula based methodology for predicting Sacral Nerve Stimulation lead temperatures when undergoing MRI exposures is presented. A generalized lead pathway model having 4 primary factors is used to represent the clinical placement. Twelve experimental configurations are selected based on variation of these generalized factors. Heating data measured in an MRI phantom is used to formulate an analytical model. Predictions from the model are compared against the actual data measured in MRI testing. The mean squared error for the model against the 12 test cases is 0.112 °C.

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