Table 7.

Mean, min., and max. doses for PTV's and OAR's in IMRT versus 3D-CRT

		IMRT		3D-CRT		p
		Dose	SD	dose	SD
PTV 1	mean	68.76	± 1.88	64.40	± 2.79	0.61
	min	61.07	± 3.31	57.39	± 6.79	0.02
	max	73.14	± 0.98	73.94	± 1.88	0.1
PTV 2	mean	60.68	± 0.63	61.00	± 0.78	0.03
	min	51.40	± 3.44	40.89	± 7.03	<0.01
	max	71.90	± 1.51	73.68	± 2.64	0.01
Brain	Mean	25.57	± 3.24	22.90	± 4.31	<0.01
Brainstem	mean	13.76	± 8.74	13.37	± 9.25	0.79
	max	37.04	± 20.2	36.56	± 20.15	0.77
Chiasm	mean	18.51	± 12.56	15.83	± 13.33	0.14
	max	28.16	± 17.9	23.56	± 16.84	0.07
Optic nerve rt.	mean	8.48	± 6.49	7.57	± 8.66	0.64
	max	15.2	± 12.04	12.19	± 12.43	0.14
Optic nerve lt.	mean	13.02	± 11.94	13.50	± 14.33	0.79
	max	18.99	± 16.39	18.20	± 17.69	0.69