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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 (╬Ár = 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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