Segmentation of Dynamic Total-Body [¹⁸F]-FDG PET Images Using Unsupervised Clustering

Figure 3

(a) Jaccard indices encoded by colour for different organs and methods (cols) in each 30 test image (rows). The number of clusters was 25 for PCA, 22 for ICA, and 18 for GMM. (b, c) The mean and standard deviation of the Jaccard indices over the images for all organs (rows) and methods (columns).

(a)

(b)

(c)