Cerebral perfusion images

<b>Cerebral blood flow (CBF):</b> <b>demeaned_swecqCBF_43_base_part1.nii.gz:</b> Smoothed, normalized CBF image at Y0, which has been mean-centred (the mean at each voxel across the sample is 0). As file size was limited, this is the first part, representing the first 21 subjects. Order is indicated by the ASL_order_avg.part1 column. <b>demeaned_swecqCBF_43_base_part2.nii.gz:</b> As above, but for the 22 remaining subjects. Order is indicated by the ASL_order_avg.part2 column. <b>savg_wecqCBF_43_part1.nii.gz:</b> Smoothed, normalized average CBF images for each participant (average of Y0 and Y1). Again for file size restriction, this file holds data for the first 21 participants. Order is indicated by the ASL_order_avg.part1 column. <b>savg_wecqCBF_43_part2.nii.gz:</b> As above, but for the 22 remaining subjects. Order is indicated by the ASL_order_avg.part1 column. <b>sdiff_wecqCBF_43.nii.gz:</b> Difference in smoothed, normalized CBF between the two timepoints (diff=Y0-Y1). Order is indicated by the ASL_order.diff column.<b>GM_mask.nii:</b> Study specific grey matter mask.