Summary: Safe Deep Brain Stimulator MR Imaging Experiments Using Fiber Optic Current Monitoring Feedback System
, N. Sengezer1
, B. Akin2
, D. M. Gulnerman1
, B. C. Insal3
, C. Kerse1,2
, and E. Atalar1,2
Electrical and Electronics Engineering, Bilkent University, Ankara, Turkey, 2
National Magnetic Resonance Research Center (UMRAM), Ankara, Turkey,
Moleculer Biology and Genetics, Bilkent University, Ankara, Turkey
MRI has been used to image deep brain stimulator (DBS) lead and fMRI studies have been conducted in order to understand stimulation profiles of the electrodes
(1-5). Both placement and functionality of the lead are vital. However, DBS leads may cause severe burns because of the RF induced currents during MRI (6,7).
Previously, a fiber optic signal transmission system was presented by authors. In this study, an important extension is proposed in order to maximize safety profile
of the system (8). Proposed feedback mechanism enables monitoring
of the induced current to the brain. Any rise or fall of the current is a
possible reason of changing conductivity due to RF heating.