Abstract #0621
A 7T 8 channel transmit-receive dipole array for head imaging: dipole element and coil evaluation
Gang Chen 1 , Martijn Cloos 1 , Daniel Sodickson 1 , and Graham Wiggins 1
1
The Bernard and Irene Schwartz Center for
Biomedical Imaging, Department of Radiology, New York
University School of Medicine, New York, NY, United
States
Electric dipole antennas are seeing increasing use for
7T MR imaging. With 8 elements surrounding a body sized
tissue equivalent phantom and array of dipole antennas
can achieve higher central SNR than an array of loops,
while simultaneously having greater coverage along Z.
Most 7T head coils today rely on birdcage, TEM volume
coils, or arrays of loops for transmit. Signal dropout
in inferior brain regions such as the cerebellum and
brain stem is a common problem. We describe here a
dipole array for 7T head imaging designed for extended
coverage and evaluate its performance in phantom and
volunteer imaging.
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