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Flow chart illustrates the WR-based hPatlak imaging method. In the WR image, all voxels have been assigned either to the hWR (white) or lWR (black) cluster, according to their calculated WR coefficient value and a user-selected WR threshold (0.95 in this case). The depicted WR image classification may considerably change for different WR thresholds and patients but hWR cluster usually tends to include the high focal uptake regions.
