Abstract #3320

Evaluating a Volumetric High-Permittivity (HPM) Helmet for Brain Imaging at 3.0 T

Karthik Lakshmanan^1,2, Jezry Walczyk^1,2, Sebastian Rupprecht³, Michael T Lanagan³, Qing X Yang³, Ryan Brown^1,2,4, and Christopher Collins^1,2,4

¹Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, NYU Grossman School of Medicine, Newyork, NY, United States, ²Center for Advanced Imaging Innovation and Research (CAI2R), Department of Radiology, NYU Grossman School of Medicine, New york, NY, United States, ³HyQRS, LLC, State College, PA, United States, ⁴Vilcek Institute of Graduate Biomedical Science, NYU Grossman School of Medicine, New york, NY, United States

Synopsis

A thin (8mm) helmet-shaped shell of high-permittivity material (HPM) is seen to double transmit efficiency and increase SNR by 40% at the center of tissue equivalent head phantom when compared to the body coil alone, with little effect on B₁homogeneity within the brain region. While evaluation of effects on receive arrays is ongoing, from the results shown here it seems an HPM helmet could be used at 3T in place of more electronically cumbersome head transmit coils.

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