Abstract #4814
Signal-to-Noise Ratio gain at 3T using a thin layer of high-permittivity material inside enclosing receive arrays
Riccardo Lattanzi 1,2 , Manushka V Vaidya 1,2 , Giuseppe Carluccio 1 , Daniel K Sodickson 1,2 , and Christopher M Collins 1,2
1
The Bernard and Irene Schwartz Center for
Biomedical Imaging, Department of Radiology, New York
University School of Medicine, New York, NY, United
States,
2
The
Sackler Institute of Graduate Biomedical Sciences, New
York University School of Medicine, New York, NY, United
States
Cushions of high-permittivity material (HPM) placed
between radiofrequency (RF) coils and the object can
enhance transmit and receive performance. We
investigated in simulation the signal-to-noise ratio (SNR)
gain when covering the inside of a receive array
uniformly surrounding a dielectric sphere with a
continuous 1 cm layer of HPM (εr = 500). The SNR gain
was positive for every voxel when the array had at least
32 coils (average ~ 10%, maximum ~ 30%). Our results
suggest that using a thin encircling layer of HPM could
be a practical method to improve performance of receive
head arrays at 3T.
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