Fig. 4From: Reduction of dose to duodenum with a refined delineation method of Para-aortic region in patients with locally advanced cervical Cancer receiving prophylactic extended-field radiotherapyComparation of the dose volume histograms (DVH) with the two delineation methods for a patient with cervical cancer receiving prophylactic extended-field radiotherapy (blue line-PGTV, red line-PCTV, orange line-Duo2, pink line-Duo3, quadrate box-old delineation method, triangle box-new delineation method)Back to article page