Figure 3From: Three-dimensional conformal radiation for esophageal squamous cell carcinoma with involved-field irradiation may deliver considerable doses of incidental nodal irradiationRelationship between the PTV length located in the upper-thoracic esophagus and incidental irradiation dose to region 105 and 106rec-L of middle-thoracic ESCC. EUD, equivalent uniform dose.Back to article page