Association of visual and quantitative heterogeneity of 18F-FDG PET images with treatment response in locally advanced rectal cancer: A feasibility study
Fig 2
Major axial plane of the extracted VOI from four of the tumors analyzed with VOI boundaries shown in yellow. (a) and (c) show an example of homogeneous tumors with zero score in the visual heterogeneity scale; (b) and (d) show an example of heterogeneous tumors with score one in the visual heterogeneity scale. (e) and (g) show an example of tumors with zero score in the visual pattern scale; (f) and (h) show an example of tumors with score one in the visual pattern scale.