Haydar Celik1,2, Namik Sengezer3,
Burak Akin2, Dogac Mehmet Gulnerman3, Burcu Cingoz
Insal4, Can Kerse, 23, Ergin Atalar, 23
1Electrical and Electronics Engineering,
Bilkent University , Ankara, Turkey; 2National Magnetic Resonance
Research Center (UMRAM), Ankara, Turkey; 3Electrical and
Electronics Engineering, Bilkent University, Ankara, Turkey; 4Moleculer
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.
Both placement and functionality of the lead are vital. However, DBS leads
may cause severe results because of the RF and gradient fields. 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. 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. Therefore, monitoring this quantity
provides opportunity for better safety profile. In this study, in-vivo and
in-vitro safety experiments have been conducted.
Keywords