Fig. 2
From: Estimation of adaptive radiation therapy requirements for rectal cancer: a two-center study
(a), (c) Distributions of the DVH-based indicators of the 359 fractions at center 1 and 134 fractions at center 2. The vertical red line represents the tolerance range based on 10 patients. The notation on the top of each subgraph shows the proportion of fractions within tolerance. (b), (d) Distribution of fractions with the number of DVH-based indicators exceeding the threshold at center 1 and center 2. PTV: planning target volume, FH-L: left femoral head, FH-R: right femoral head, Dn: The dose received by n% of the volume in the structure