Table 2.

Mean ICRU point doses and D2cc volume doses in bladder and rectum (orthogonal method)

	Bladder			Rectum
	Mean (range) ICRU (Gy)	Mean (range) D2cc (Gy)	Average Ratio (range) (D2cc/ ICRU)	Mean (range) ICRU (Gy)	Mean (range) D2cc (Gy)	Average Ratio (D2cc/ICRU)
Onal et al. [12]	6.1 (2.9-8.7)	9.2 (7.6-12.9)	1.51	5 (2.2-10.7)	8.3 (5.1-12.3)	1.66
Jamema et al. [13]	4.56	7.12	1.56 ± 0.6	4.63	5.16	1.11 ± 0.2
Tan et al. [14]	2.9 (1.2-4.5)	3.9 (1.3-6.3)	1.34 ± 0.34	3.4 (2.4-4.2)	3.6 (1.8-5.9)	1.07 ± 0.25

ICRU – International Commission on Radiation Units and Measurements; D2cc – dose received by 2cc of the volume of the bladder calculated from image based CT planning