Fig. 1From: Considerable interobserver variation in delineation of pancreatic cancer on 3DCT and 4DCT: a multi-institutional studyFor the four patients, delineations of GTV projected onto an axial 3DCT slice (left) and iGTV projected onto an axial 4DCT Ave-IP slice (right) for all eight observers. Colors are related to observers and are similar for Figs.2, 3 and 5 Back to article page