Fig. 1From: Stereotactic ablative radiotherapy for early-stage lung cancer following double lung transplantationRadiotherapy plan demonstrating isodose distributions and the dose-volume histogram for the targets (internal gross tumor volume (IGTV) – the same as internal target volume (ITV) and planning target volume (PTV)) and organs-at-risk (spinal canal, esophagus, heart and lung)Back to article page