Figure 2From: A modified VMAT adaptive radiotherapy for nasopharyngeal cancer patients based on CT-CT image fusionVolumetric changes between iCT and rCT. Volume changes between the initial planning CT and the rCT at the 23rd fraction; a) contours on the initial planning CT; b) contours on the rCT; c) contours on the initial planning CT projected on the rCT after image fusion.Back to article page