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Abstract #3484

Comparison of Active Voxel Composition Using BOLD Vs. VASO and VAST/GMN FMRI

Ronald A. Meyer1,2, Jill M. Slade2, Robert W. Wiseman1,2

1Physiology, Michigan State University, East Lansing, MI, United States; 2Radiology, Michigan State University, East Lansing, MI, United States


Vascular Space Occupancy (VASO) and VASO with Tissue suppression (VAST, or Gray Matter Nulling, GMN) are fMRI methods which detect blood volume changes, and hence are thought be more localized to gray matter than conventional BOLD fMRI. However this study shows that at the typical spatial resolution of fMRI studies, these methods are no better localized to gray matter voxels than BOLD.