Abstract #2178

Parametric Study of High Dielectric Constant Helmet Characterization

Parisa Lotfi Poshtgol¹, Soo Han Soon², Michael Lanagan³, Eugene Furman⁴, Xinlian Chen⁵, Xin Li², Xiao-Hong Zhu², Wei Chen², and Qing X Yang¹

¹Center for NMR Research, Departments of Neurosurgery and Radiology, Pennsylvania State University, Hershey, PA, United States, ²Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, United States, ³Department of Engineering Science and Mechanics, Pennsylvania State University, State college, PA, United States, ⁴Materials Research Institute, Pennsylvania State University, State college, PA, United States, ⁵Department of Biomedical Engineering, South China University of Technology, Guangzhou, China

Synopsis

Helmets conformal to the human head with high or ultra-high dielectric constant (HDC/uHDC) materials have been shown to enhance the SNR of entire human head along with a receive array. However, the dielectric resonance modes (DRMs) of the helmet have not been studies systematically. This investigation aimed to; 1) describe the characteristics of the DRMs and their RF field distributions; 2) establish the relationships between DRMs and the basic geometric parameters of the helmet using numerical modeling. Understand the DRMs of large uHDC structures are fundamentally important for future applications of uHDC materials for RF field reach.

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