All site 128 PIB scans have been re-reconstructed over the past several months. The new reconstruction code has a new scatter correction algorithm implemented, resulting in from some less to much less scatter being subtracted, particularly in the lower slices, e.g. those that include the normalizing region, cerebellar gray matter. There are 47 reworked PiB? scans in all. These should be downloaded and replace all previous site 128 PiB? image sets. This includes both the “raw” uploads and the 4 sets of pre-processed image sets.
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