Development and testing of implanted carbon electrodes for electromagnetic field mapping during neuromodulation.

ABSTRACT:

Purpose

Deep brain stimulation electrodes composed of carbon fibers were tested as a means of administering and imaging magnetic resonance electrical impedance tomography (MREIT) currents. Artifacts and heating properties of custom carbon-fiber deep brain stimulation (DBS) electrodes were compared with those produced with standard DBS electrodes.

Methods

Electrodes were constructed from multiple strands of 7-μm carbon-fiber stock. The insulated carbon electrodes were matched to DBS electrode diameter and contact areas. Images of DBS and carbon electrodes were collected with and without current flow and were compared in terms of artifact and thermal effects in phantoms or tissue samples in 7T imaging conditions. Effects on magnetic flux density and current density distributio

SUBMITTER: Ashok Kumar N 

PROVIDER: S-EPMC8183461 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature