Abstract #4319

The potential of a 256-Channel receive-only Array Coil for accelerated Cardiac Imaging at 3T

Bernhard Gruber^1,2, Arjan D. Hendriks ¹, Cezar B.S. Alborahal³, Bas Brussen³, Tim Leiner¹, Gustav Strijkers¹, Dennis W. J. Klomp^1,3, and Martijn Froeling¹

¹Department of Radiology, University Medical Center Utrecht, Utrecht, Netherlands, ²Institute of Biomedical Mechatronics, Johannes Kepler University, Linz, Austria, ³MR Coils B.V., Zaltbommel, Netherlands

High-density coil arrays can be used to accelerate MRI. Here we present the results from measurement-based extrapolations of a 256 Channel Cardiac Array Coil obtained by 16 sequential scans of a 16 Channel Array to assess acceleration performance and sensitivity constraints for 3T MRI. With element sizes of 55 mm x 33 mm, tissue load remains dominant at the 3T Larmor frequency of water, while SENSE accelerations can go up to 20-fold at low g-factors. These results motivate the design of a 256 channel cardiac array for accelerated 3T MRI.

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