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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 Polimeni2,3, Laleh Golestanirad2, Robin Etzel1, Lawrence L Wald2,3, David A Feinberg4,5, and Kawin Setsompop2,3

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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