Abstract #1224

Sub-Millimeter Cortical Imaging at 7T using a High-Density Motor-Cortex 32-Channel Array Coil

Boris Keil¹, Charlotte Sappo², Berkin Bilgic², Jonathan R Polimeni^2,3, Laleh Golestanirad², Robin Etzel¹, Lawrence L Wald^2,3, David A Feinberg^4,5, and Kawin Setsompop^2,3

¹Institute of Medical Physics and Radiation Protection, Department of Life Science Engineering, Mittelhessen University of Applied Sciences (THM), Giessen, Germany, ²A.A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States, ³Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, United States, ⁴Helen Wills Neuroscience Institute, UC Berkeley, Berkeley, MA, United States, ⁵Advanced MRI Technologies, Sebastopol, CA, United States

A densely packed 32-channel motor cortex array coil was designed, constructed and compared to a 32-channel whole-head coil at 7T. The developed design allows coil adaptability to a wide range of head sizes, thereby minimizing the distance of the brain to the individual small loop elements. Using the high SNR and parallelism afforded by this array, a substantial gain in sensitivity and performance for imaging the human motor cortex was achieved, enabling 0.15x0.15x0.65 mm³ resolution SWI scans.

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