Abstract #1779
Determination of the optimal number of coil elements: A semi-theoretical approach
Mark Schuppert 1 , Karl-Friedrich Kreitner 2 , Stefan Fischer 1 , Simon Wein 1 , Boris Keil 3 , Lawrence L Wald 3,4 , and Laura M Schreiber 1,5
1
Section of Medical Physics, Department of
Radiology, Johannes Gutenberg University Medical Center,
Mainz, Germany,
2
Department
of Radiology, Johannes Gutenberg University Medical
Center, Mainz, Germany,
3
A.A.
Martinos Center for Biomedical Imaging, Department of
Radiology, Massachusetts General Hospital, Charlestown,
MA, United States,
4
Harvard Medical School,
Boston, MA, United States,
5
Department
of Cellular and Molecular Imaging, Comprehensive Heart
Failure Center, Wuerzburg, Germany
SNR and g-factor (R = 3, 5, 7, and 8) contribution of
coil elements as a function of the coil element distance
to the heart was calculated from unaccelerated cine
cardiac MRI data obtained with a 64-channel cardiac coil
by consecutive addition of coil elements in concentric
rings around a center element above the heart. Lateral
coil elements do neither contribute substantially to SNR
nor improve the g-factor. In 2D imaging at R=5 adequate
image quality is achievable with this coil. Omitting
lateral coil elements does not seem to compromise the
accelerated imaging performance of this coil.
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