Fig. 7From: Experimental phantom evaluation to identify robust positron emission tomography (PET) radiomic featuresHeterogeneous simulated lesions. a Images and contours resulted from the 3 segmentation methods: a density threshold in the corresponding CT (ground truth), the 40% threshold PET segmentation approach (40%), and the contrast-oriented algorithm (COA). b Bland–Altman plot analysis for volume estimation by 40% and by COA with respect to volume estimated by GTBack to article page