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Abstract #1793

A single channel spiral volume coil for in vivo imaging of the whole human brain at 6.5 mT

Cristen LaPierre 1,2 , Mathieu Sarracanie 1,2 , David E J Waddington 1,3 , and Matthew S Rosen 1,2

1 MGH/A.A. Martinos Center for Biomedical Imaging, Charlestown, MA, United States, 2 Department of Physics, Harvard University, Cambridge, MA, United States, 3 ARC Centre of Excellence for Engineered Quantum Systems, School of Physics, University of Sydney, Sydney, NSW, Australia

MRI at low magnetic field (<10 mT) presents unique engineering challenges. Imaging coils must maximize coverage over the volume of interest while minimizing losses in the Johnson noise dominated regime. We designed a spiral volume coil design for combined Tx and Rx and optimized for human head imaging in the transverse B0 field of our low field scanner. A 30-turn single channel volume spiral coil designed for low field imaging significantly outperformed our 8-channel array coil. By minimizing losses in the coil, maximizing filling factor and eliminating coupling issues, we were able to obtain significantly higher SNR.

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