Abstract #4812
Improved surface coil performance at any depth in a lossy sphere with a dielectric disc
Wei Luo 1,2 , Yang Qing 1 , and Christopher M. Collins 3
1
Radiology, Pennsylvania State University,
Hershey, PA, United States,
2
Engineering
Science & Mechanics, Pennsylvania State University,
University Park, PA, United States,
3
Radiology,
New York University, New York, NY, United States
A simple hybrid coil-HPM design using a simple loop coil
and a high-permittivity material (HPM) disc was
optimized at 3T using PSO/FDTD method including the
consideration on HPM location, geometry, material
properties, MRI coil location, and coil geometry for the
first time. The coil efficiency of the optimized hybrid
design was better than the one produced by the optimized
single loop coil at any depth in a lossy sphere,
particularly by an average increase of 87% and 22% at
the center and superficial regions, respectively. The
performance of this simple hybrid design encourages us
to expect more improvement with a more sophisticated
design.
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