A workflow for predicting temperature increase at the electrical contacts of deep brain stimulation electrodes undergoing MRI.

ABSTRACT:

Purpose

The purpose of this study is to present a workflow for predicting the radiofrequency (RF) heating around the contacts of a deep brain stimulation (DBS) lead during an MRI scan.

Methods

The induced RF current on the DBS lead accumulates electric charge on the metallic contacts, which may cause a high local specific absorption rate (SAR), and therefore, heating. The accumulated charge was modeled by imposing a voltage boundary condition on the contacts in a quasi-static electromagnetic (EM) simulation allowing thermal simulations to be performed with the resulting SAR distributions. Estimating SAR and temperature increases from a lead in vivo through EM simulation is not practical given anatomic differences and variations in lead geometry. To overcome this limitation,

SUBMITTER: Sadeghi-Tarakameh A 

PROVIDER: S-EPMC9545305 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature