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Abstract #2039

T2 weighted high-resolution fMRI in human visual cortex at 9.4 T using 3D-GRASE

Valentin G. Kemper 1 , Federico De Martino 1,2 , Desmond H. Y. Tse 3,4 , Benedikt A. Poser 1 , Essa Yacoub 2 , and Rainer Goebel 1

1 Cognitive Neuroscience FPN, Maastricht University, Maastricht, Limburg, Netherlands, 2 Center for Magnetic Resonance Research, CMRR, Radiology, University of Minnesota, Minneapolis, MN, United States, 3 Neuropsychology and Psychopharmacology, FPN, Maastricht University, Maastricht, Limburg, Netherlands, 4 Radiology, University Medical Centre, Maastricht University, Limburg, Netherlands

A zoomed, inner-volume 3D-GRASE sequence was used to acquire T2 weighted 0.8 mm and 0.6 mm isotropic resolution fMRI at 9.4 T in human early visual areas. Robust activation patterns could be observed at both resolutions. Results are compared to 7 T data of the same volunteer with the same functional paradigm and similar technical set-up. At the same resolution, temporal SNR is significantly higher at 9.4 T than at 7 T, while T2 weighted fMRI signal changes induced by a visual task were found to be similar.

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