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Abstract #3176

Optimization of an 8-channel receive-only surface array for whole brain MRI of marmosets

Daniel Papoti 1 , Cecil Chern-Chyi Yen 1 , Pascal Sati 1 , Joseph Robert Guy 1 , Daniel S Reich 1 , and Afonso C. Silva 1

1 NINDS, National Institutes of Health, Bethesda, Maryland, United States

In this work we describe the development and comparison of three different 8-channel receive-only arrays built to provide whole brain MRI coverage of marmosets with high sensitivity. Among all coils built, the design based on a central elliptical element partially overlapped with 7 loops showed excellent coverage with high sensitivity throughout the whole brain. A gain up to 60% in SNR in the frontal cortex, 40% in the occipital cortex, and 20% in the center of the brain was achieved when compared to the other two geometries. High-resolution brain images obtained from an autoimmune encephalomyelitis animal clearly show white matter lesions in both T1- and T2-weighted images.

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