Fig. 6From: Patterns of recurrence after surgery and efficacy of salvage therapy after recurrence in patients with thoracic esophageal squamous cell carcinomaTarget contouring and planning design for involved field irradiation. GTVnd (pink area), CTV (blue area), PTV (green area). The prescribed dose (IMRT) for 95% PTV was 56 Gy/2 Gy/28 fBack to article page