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Functions are available to analyze loaded TAC data for \n    individual participants or in batches. Major functionality includes weighted\n    TAC merging by region of interest (ROI), calculating models including \n    standardized uptake value ratio (SUVR) and distribution volume ratio (DVR, \n    Logan et al. 1996 \u003cdoi:10.1097/00004647-199609000-00008\u003e), basic plotting \n    functions and calculation of cut-off values (Aizenstein et al. 2008\n    \u003cdoi:10.1001/archneur.65.11.1509\u003e). 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