Abstract #0764

A 64-Channel 7T array coil for accelerated brain MRI

Azma Mareyam¹, John E. Kirsch^1,2, Yulin Chang³, Gunjan Madan³, and Lawrence L. Wald^1,2

¹Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, United States, ²Harvard Medical School, Boston, MA, United States, ³Siemens Medical Solutions USA, Boston, MA, United States

We construct and test a prototype 64-channel brain array coil for 7T and compare it to a 32-channel coil of similar design. Coil characteristics like signal to noise ratio, noise correlation matrix, and noise amplification (G-factor) for parallel imaging are described as well as and a comparison of the B1+ maps to assess birdcage coil efficiency and homogeneity. The coil was designed on a split-half former with a sliding top half to facilitate patient entry and utilizes a sliding birdcage coil for transmit

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