Table 1.

Characteristics of the cohort of patients used.

	Median	Min	Max
Prostate volume (cc)	43.96	18.18	106.77
Bladder volume (cc)	21.85	1.28	74.34
Rectum volume (cc)	14.68	2.73	35.31
Urethra volume (cc)	1.96	0.86	2.89
Number of catheters	17	14	20
Number of dwell positions	200	128	341