Figure 3

Scatter plots showing the correlation between different tumor regions as defined fully automatically or manually drawn.
Necrosis showed the weakest correlation ((A), r = 0.4). Stronger correlations were found for the FLAIR envelope and contrast enhancing regions, ((B), r = .765) and ((D), r = 0.786), respectively. PCAV (necrosis + enhancing regions) and the TATV (sum of all sub-compartments), r = 0.86 and r = 0.86, showed strong correlation as well between automatic and manual segmentation (E,F).