Table 1.

Dose Constraints.

PRV (Planning Organ at Risk Volume)	Volume	Dose Constraints		Avoidance Endpoint
		AHRT	SBRT
Spinal cord	Max	45 Gy/25 fr	25 Gy/4 fr	Myelitis
Esophagus	<5 mL	55 Gy/25 fr	30 Gy/4 fr	Stenosis/fistula
Heart/ pericardium	<10 mL	60 Gy/25 fr	32 Gy/4 fr	Pericarditis
Great vessels (aorta)	<10 mL	70 Gy/25 fr	35 Gy/4 fr	Aneurysm
Great vessels (pulmonary artery)	<1 mL	75 Gy/25 fr	40 Gy/4 fr	Aneurysm
<10 mL	70 Gy/25 fr	35 Gy/4 fr
Great vessels (superior vena cava, pulmonary vein)	<10 mL	70 Gy/25 fr	35 Gy/4 fr	Stenosis/fistula
Trachea/bronchus	<1 mL	75 Gy/25 fr	40 Gy/4 fr	Stenosis/fistula
<10 mL	70 Gy/25 fr	35 Gy/4 fr
Lung (bil. lung - PTV)	<100 mL	60 Gy/25 fr	40 Gy/4 fr	Pneumonitis