FIGURE 2. Regional distribution of correspondence between PET and SPECT z maps. Product of PET and SPECT z scores (with both scores negative) was summed over all patients and displayed as fusion image with standard MR image for anatomic orientation. Green line delineates volume of best correspondence (VBC), defined as average z product of 1. Numbers on scale represent square roots of product of PET and SPECT z scores (with both scores negative) summed over all patients.

Return to article