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PiB (left) and FDG (right) images for three exemplar cases. Case #21 was classified as DUE, Case #29 was classified as PCA, and Case #8 was classified as PPA. Solid arrows represent areas of relatively high PiB or FDG uptake while open areas represent relatively lower areas. Images are quantified by standardized uptake volume ratio (SUVR) with the respective displayed color scales.
