Figure 2.
Three panels present a P E T brain slice, an A A L brain mask, and the masked slice divided into outlined regions.The three panels are labelled a, b and c. Panel a contains a P E T brain slice with varying intensity across the brain. Panel b contains an A A L brain mask with the brain region separated from the background. Panel c contains the P E T brain slice within the mask boundary. The masked brain region is divided into multiple outlined regions.

An example of (a) one-slice PET image and (b) the corresponding AAL binary map, performed by (c) Masked SLIC segmentation within the 3D brain mask (red boundary), shown here with 100 regions as an illustrative example. All regions are not necessarily shown in this one slice

Source: Authors’ own work

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