Figure 2: a: Delineation of Gross Tumor Volumes, GTV-MR (Blue), GTV-PET (Green), and GTV-X (Red). The GTV-PET lies partially outside GTV-MR yielding a lower CI of 0.03. b: Delineation of respective Clinical Target Volumes, CTV-MR (Blue), CTV-PET (Green), and CTV-X (Red) in the same patient yielding CI of 0.16.