Figure 4From: Stereotactic body radiotherapy using gated radiotherapy with real-time tumor-tracking for stage I non-small cell lung cancer (a) Correlation with maximum amplitude of marker movement and planning target volume (PTV), (b) Correlation with maximum amplitude of marker movement and mean lung dose (MLD), (c) Correlation with maximum amplitude of marker movement and the volume of lung receiving 20 Gy (V20). Back to article page