Figure 1: a: Delineation of Gross Tumor Volumes, GTV-MR (Blue), GTV-PET (Green), and GTV-X (Red) on fused image. The GTVPET is inside GTV-MR yielding CI of 0.05. b: Delineation of respective Clinical Target Volumes, CTV-MR (Blue), CTV-PET (Green), and CTV-X (Red) in the same patient yielding CI of 0.38.