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Abstract #2361

High Speed 3D B-SSFP at 6.5 mT

Mathieu Sarracanie1, 2, Brandon Dean Armstrong1, 2, Matthew S. Rosen1, 2

1Department of Physics, Harvard University, Cambridge, MA, United States; 2MGH/Martinos Center for Biomedical Imaging, Boston, MA, United States

The present work reports on the development of fast 3D imaging at very-low magnetic field (6.5 mT) based on the intrinsic 1H NMR signal using balanced steady state free precession (b-SSFP). This result is the first implementation of b-SSFP at very low magnetic field. The presented optimized bi-planar electromagnet combined with fast 3D imaging strategies and sparse sampling has potential to reach clinical standards for patient imaging and open new perspectives for new generation of lower-cost high-performance purpose-built imagers practical for operation in hospitals, battlefield medical facilities, or forward triage.

Keywords

achieved acquisition adaptive addition advanced allows applied artifacts attenuation audience award balanced bandwidth battlefield bell biomedical built cables cause clinical clinicians combined compressed contexts cost critical custom dataset dedicated defense demonstrating deployable deployment described development device diagnostic double duration effort electromagnet element enable enclosure errors expect experiment facilities fast field focuses forward free fully future generation gives goal gradient gradients hardware hospitals hours implementation improved included includes innovation inside instruments intrinsic limited long major matrix medical methodologies minutes must navigators noise object offer open operates operation optimized overall overcomes patient pepper performance perspectives physicists physics planar poor portable potential power practical precession previously principle program prohibitively proof reach readout recently reconstructed reconstruction reduce rendered reports resolution respectively risk sampled sampling scanner screened sensing sets severe shielded slew slices solved space sparse speed stability stable steady strategies submitted suite supply supported system systems target technologies technology throughout transportable triage typically upgraded utility