Table 1.

Prespecified normal tissue doses

Organ at risk	Prespecified normal tissue doses
Brachial plexus	Max dose = EQD2 ≤ 66 Gy
Heart	Max dose = EQD2 ≤ 76 Gy Mean dose ≤ 46Gy
Lung	Mean lung dose (lung-GTV) ≤ 20 Gy
Mediastinal envelope∗	Max dose = EQD2 ≤ 76 Gy
Spinal canal PRV	Max dose = EQD2 ≤ 50 Gy

Abbreviations: GTV = gross tumor volume; PRV = planning organ at risk volume; EQD2 = Equivalent dose in 2 Gy fractions.

^∗Comprising the heart, proximal bronchial tree, trachea, and esophagus and edited manually to include the blood vessels in the upper mediastinum.