Abstract #0402
Bent Electric Dipoles: A Novel Coil Design Inspired by the Ideal Current Pattern for Central SNR at 7 Tesla
Gang Chen 1 , Martijn Cloos 1 , Riccardo Lattanzi 1 , Daniel Sodickson 1 , and Graham Wiggins 1
1
The Bernard and Irene Schwartz Center for
Biomedical Imaging, Department of Radiology, New York
University School of Medicine, New York, NY, United
States
Investigations of the Ultimate Intrinsic SNR (UISNR)
have revealed that curl-free current modes make a
significant, even dominant, contribution to central
UISNR at high frequencies and for large objects. For a
body-sized phantom at 7T, the ideal current pattern for
curl-free current modes shows V-shaped patterns, which
provide the phase evolution in the axial direction
needed to account for propagation delays to the central
region of interest. We show in simulations that bending
an electric dipole into a V can better approximate the
ideal current phase evolution and provide superior
performance compared to a straight dipole.
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