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. Author manuscript; available in PMC: 2018 Nov 1.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2012 Apr 5;83(3):901–908. doi: 10.1016/j.ijrobp.2012.01.022

Table.

Consensus panel normal tissue contraints

Structure Constraints
Kidney (left and right) For three-dimensional conformal plans in patients with two normally functioning kidneys,
 the dose to 50% of the right kidney and 65% of the left kidney must be <18 Gy. For IMRT
 planning, mean dose to bilateral kidneys must be <18 Gy. If only one kidney is present, 15%
 of the volume of that kidney must receive <18 Gy and 30% must receive <14 Gy.
Liver Mean liver dose must be ≤30 Gy.
Stomach and small intestine Maximum dose ≤58 Gy; 10% of each organ volume must receive <56.0 Gy, 15% of the volume
 of each organ must receive <52.0 Gy.
Spinal canal Maximum dose to a point that is 0.03 cm3 must be <50 Gy.

Abbreviation: IMRT = intensity-modulated radiotherapy.