Table 5.

The values of the equivalent uniform dose (EUD), with margins of uncertainty, for the gross tumor volume, whole rectal volume and bladder.

Volume	EUD exponent (α)	IMRT EUD [Gy]		3D-CPT EUD [CGE]
		Average of 10 plans	Range (min - max)	Average of 10 plans	Range (min - max)
GTV	$-{10}_{-5}^{+3}$	83.4 (±0.04)	81.7 – 86.1	81.1 (±0.02)	80.3–82.4
Rectum	$5_{-2}^{+3}$	${56.4}_{-6.1}^{+5.6}$	${48.3}_{-6.9}^{+7.4}-{62.2}_{-4.3}^{+4.0}$	${54.8}_{-7.9}^{+6.4}$	${46.4}_{-8.7}^{+7.8}-{62.3}_{-6.6}^{+5.1}$
Bladder	$7_{-3}^{+5}$	${59.0}_{-8.9}^{+7.4}$	${53.0}_{-9.5}^{+8.0}-{65.0}_{-6.2}^{+5.3}$	${61.4}_{-9.1}^{+6.6}$	${56.4}_{-10.9}^{+8.2}-{70.0}_{-5.5}^{+3.8}$

Abbreviations: EUD = equivalent uniform dose; IMRT = intensity-modulated radiotherapy; 3D-CPT = 3D-conformal proton therapy; CGE = cobalt Gray-equivalent; GTV = gross tumor volume.