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Abstract #1833

Mapping of Relative Vessel Sizes in fMRI With SAGE

Allen T Newton 1,2 , Jack T Skinner 1,2 , and C Chad Quarles 1,3

1 Radiology and Radiological Sciences, Vanderbilt University, Nashville, TN, United States, 2 Institute of Imaging Science, Vanderbilt University, Nashville, TN, United States, 3 Institute of Imaging Sciences, Vanderbilt University, Nashville, TN, United States

While spin echo measurements have been long established as being more sensitive to activity in capillary beds, gradient echo acquisitions have remained popular due in large part to their improved sensitivity. Here, we present a method for using simultaneous spin echo and gradient echo acquisitions to gain insight to the size of vessels underlying traditional gradient echo eperiments. This is superior to traditional spin echo studies in that it allows you to maintain the sensitivity associated with gradient echo images while providing a more continuous metric that is sensitive to relative vessel size.

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