Table 2.

PTV and OAR dosimetry with hydrogel spacer

Organ	RTOG 0938	Achieved Dose
	Parameters (Gy)	(mean±stdev)
PTV
Maximum point dose (1cc)	≤ 38.78	38.1	±	0.5
Minimum dose received by 95% of PTV	≥ 36.25	36.3	±	0.4
Rectum
Maximum point dose (1cc)	≤ 38.06	33	±	3.4
Less than 3 cc	< 34.40	29.5	±	4.0
90% rectum	≤ 32.63	25.0	±	4.4
80% rectum	≤ 29.00	21.1	±	4.7
50% rectum	≤ 18.13	13.5	±	4.7
Bladder
Maximum point dose (1cc)	≤ 38.06	37	±	0.4
90% bladder	≤ 32.63	22.9	±	5.7
50% bladder	≤ 18.13	4.4	±	3.5
Urethra	≤ 38.78	38	±	0.4