Figure 4From: Four-dimensional dosimetry validation and study in lung radiotherapy using deformable image registration and Monte Carlo techniquesLeft lung DVHs from various static image sets (0%, 50%, 90%) and the 4D cumulative DVH (Case 1). For the 50% phase, the diaphragm started moving superiorly into the field, causing less lung being irradiated at this phase, thereby reducing the lung DVH.Back to article page