Fig. 5From: Deep inspiration breath-hold for left-sided breast irradiation: Analysis of dose-mass histograms and the impact of lung expansionTwo patient cases, which had higher irradiated lung mass in DIBH than in FB. For the first patient a large amount of heart tissue inside the treatment field (a) is replaced by lung tissue (b). For the second patient the PTV in FB extends over the abdomen (c) and is shifted towards the lung in DIBH (d)Back to article page