Abstract #0374
A rotating transmit coil and 32ch receive array for high-resolution brain imaging of DBS patients
Laleh Golestnirad 1 , Boris Keil 1 , Giorgio Bonmassar 1 , Azma Mareyam 1 , and Lawrence Leory Wald 1
1
Radiology, Massachusetts General Hospital,
Charlestown, Massachusetts, United States
Deep brain stimulation (DBS) is a neurosurgical
procedure that involves implanting electrodes in the
brain to electrical pulses to deep nuclei inside the
brain for treatment of a variety of disabling movement
and psychiatric disorders. We built and simulated a
transmit/receive head coil, composed of a linearly
polarized rotating birdcage transmitter and a close-fit
32 channel receive array. We showed that this coil has
slab-like E-Null region that is thick enough at 1.5 T to
encompass the whole DBS implant to significantly reduce
SAR. We also showed that insertion of a 32-channel
close-fit receive array has a negligible effect on the
transmit field distribution and does not increase the
local SAR levels at the DBS lead in 1.5 T.
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