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Abstract #0834

Integrated ΔB0/Rx coil array for improved spinal cord imaging at 3T

Ryan Topfer1, Alexandru Foias1, Nibardo Lopez Rios1, Angel Chauffray1,2, Grégoire Germain1, Nick Arango3, Lawrence L. Wald4,5, Jason P. Stockmann4,5, and Julien Cohen-Adad1,6

1NeuroPoly Lab, Institute of Biomedical Engineering, Polytechnique Montreal, Montreal, QC, Canada, 2École polytechnique fédérale de Lausanne, Lausanne, Switzerland, 3Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, United States, 4A. A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, United States, 5Harvard Medical School, Boston, MA, United States, 6Functional Neuroimaging Unit, CRIUGM, Université de Montréal, Montreal, QC, Canada

Spinal cord imaging is hampered by static and respiration-induced dynamic variations of B0, causing serious issues for EPI-based protocols and spectroscopy. Integrated ΔB0/Rx arrays could provide an effective means to further compensate small-scale variations, complementary to the existing spherical harmonic coils. Here, we designed, built and tested in a human subject an 8-channel integrated ΔB0/Rx coil for the cervical spinal cord. Results showed improvements for correcting static field variations as well as respiratory-induced variations. Future studies will investigate dynamic and real time shimming applications for the spinal cord.

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