Table 2. Mean radiation doses delivered to the OAR.

OAR	DVH parameters	IMRT	3DCRT
		Mean ± SD	Mean ± SD
Rectum	D50	45.78 ± 5.26	51.12±5.35
	D30	59.51 ± 6.16	59.72 ± 6.95
Bladder	D50	38.12 ± 13.35	38.18 ± 18.77
	D30	55.87 ± 13.14	51.73 ± 16.28
Right femoral head	D5	34.61 ± 6.41	39.71 ± 5.34
Left femoral head	D5	34.67 ± 6.13	39.39 ± 5.44

DVH = dose-volume histogram, IMRT = intensity-modulated radiotherapy, 3DCRT = 3-dimensional conformal radiotherapy, SD = standard deviation; D50= dose received by 50% volume; D30 = dose received by 30% volume; D5 = dose received by 5% volume.