Abstract #1448

Performance characterization of three coils for whole brain and/or cervical spinal cord MRI at 7T

D Rangaprakash¹, Bastien Guerin¹, Jason P Stockmann¹, Markus W May², Nibardo Lopez Rios³, Kyle M Gilbert⁴, Yulin Chang⁵, Lawrence L Wald^1,6, Julien Cohen-Adad^3,7,8, Boris Keil^1,2, and Robert L Barry^1,6

¹Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States, ²Institute of Medical Physics and Radiation Protection, University of Applied Sciences Mittelhessen, Giessen, Germany, ³NeuroPoly Lab, Institute of Biomedical Engineering, Polytechnique Montreal, Montreal, QC, Canada, ⁴Centre for Functional and Metabolic Mapping, The University of Western Ontario, London, ON, Canada, ⁵Siemens Medical Solutions USA Inc., Malvern, PA, United States, ⁶Harvard-Massachusetts Institute of Technology Division of Health Sciences & Technology, Cambridge, MA, United States, ⁷Functional Neuroimaging Unit, CRIUGM, Université de Montréal, Montreal, QC, Canada, ⁸Mila – Quebec AI Institute, Montreal, QC, Canada

Synopsis

Several neurological diseases affect both the brain and spinal cord. 7T MRI enables better imaging of the narrow cord as well as single-subject prediction using fMRI. However, concurrent brain-cord 7T imaging requires a coil with good SNR and acceleration capabilities in both head and neck, which has been unavailable. To overcome this, we performed flip-angle, SNR, g-factor and tSNR characterization of a custom-built 16Tx/64Rx head/neck radiofrequency coil. We also compared it against a custom-built 8Tx/20Rx cervical spine coil as well as a commercial 8Tx/32Rx brain coil. This hardware will pave the way for concurrent brain-cord 7T MRI in the future.

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