Abstract #1428

Reduction of coupling and noise by ultrahigh dielectric constant (uHDC) materials for phase array coil at 3T

Navid PourramzanGandji¹, Christopher T. Sica², Gary W. Yang³, Hannes Wiesner⁴, Soo Han Soon⁴, Xiao-Hong Zhu⁴, Michael Lanagan⁵, Wei Chen⁴, and Qing X. Yang¹

¹Neurosurgery, Pennsylvania State University, Hershey, PA, United States, ²Radiology, Pennsylvania State University, Hershey, PA, United States, ³Pennsylvania State University, Hershey, PA, United States, ⁴Center for Magnetic Resonance Research, Department of Radiology, University of Minnesota, Minneapolis, MN, United States, ⁵Materials Science and Engineering, Pennsylvania State University, State College, PA, United States

Prior work has examined the effects of uHDC material upon phased array coils. Several beneficial effects have been observed: reduction of per-channel noise and inter-channel noise correlations, and enhancement of SNR. Due to the high dielectric constant the electric field will be confined to the dielectric material, which leads to a reduction of the primary noise source, the conservative electric field. As a result the non-conservative field becomes more dominant within the sample, with a resulting increase of B1 field intensity and more substantial SNR enhancement.

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