Fig. 3From: CT ventilation image-guided helical Tomotherapy at sparing functional lungs for locally advanced lung cancer: analysis of dose-function metrics and the impact on pulmonary toxicityBox plots of mean Hausdorff Distance (HD) between PTV and functional regions for benefit and non-benefit group. The HD values were all found to be significant smaller in the benefit group (red) than in the non-benefit group (blue)Back to article page