Fig. 2From: Dosimetric analysis and comparison of reduced longitudinal cranial margins of VMAT-IMRT of rectal cancerChange in dose distribution after a target volume reduction of 3 cm. Protection of OARs. Differences in dose distribution (colour-wash) of the original bPTV (left) and the cranial 3 cm reduced PTV (3 cm, right). Especially the low and middle dose range covering less volume of the peritoneal space (green shape) and the bladder (yellow shape)Back to article page