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Abstract #3520

A larger subject Field-of-View and denser coil arrays at UHF: What do we gain?

Shubharthi Sengupta1, Gregor Adriany2, Valentin G Kemper1, Rainer Goebel1, and Alard Roebroeck1

1Dept. of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, Netherlands, 2Dept. of Radiology, Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, United States

Functional magnetic resonance imaging (fMRI) of the human brain has now become the preferred method for mapping functional pathways in the human visual cortex, among other brain regions. At ultra-high fields of 7 Tesla and above, the increased Contrast-to-Noise ratio for blood oxygenation level dependent (BOLD) techniques further facilitates this acquisition methodology. We designed and constructed a frontally open RF coil with a phased array transmit and a dense receiver array layout for human visual cortical imaging at 7 Tesla, specifically for visual fMRI experiments at sub-millimeter resolutions. We compared the coil's performance to that of a standard 32-channel whole-brain volume coil to inquire into its efficacy as a suitable substitute for the whole-brain coil for high resolution fMRI.

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