Fig. 1From: A phase I/II radiation dose escalation trial using simultaneous integrated boost technique with elective nodal irradiation and concurrent chemotherapy for unresectable esophageal CancerTargets contouring of a Upper thoracic esophagus (Ut); b Middle thoracic esophagus (Mt); c Lower thoracic esophagus (Lt); d Middle thoracic esophagus (Mt) with supraclavicular and abdominal lymph node metastasis. Each contour is displayed on the axial, coronal, and sagittal planes through the primary tumor. Red shading indicates GTV-T, the pink line area includes GTV-N, the green line outlines PTV, the blue line outlines PGTVBack to article page