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Scatterplot with voxel-based tumor DDCs (x-axis) against ADCs (y-axis), as a function of α value (colorized). ADCs appear to agree well with DDCs at approximately 1.0 × 10-3 mm2/s and in any case α values are close to 1. However, as α values decrease, ADCs appear to be higher than DDCs at DDCs < 1.0 × 10-3 mm2/s, whereas ADCs appear to be lower than DDCs at DDCs > 1.0 × 10-3 mm2/s.
