Comparing two strategies of dynamic intensity modulated radiation therapy (dIMRT) with 3-dimensional conformal radiation therapy (3DCRT) in the hypofractionated treatment of high-risk prostate cancer

Table 4 Dose Volume Metrics of the PTV1

	3DCRT	Targeting	Avoidance	ANOVA	3DCRT – Targeting	3DCRT – Avoidance	Targeting – Avoidance
D99%	65.18 ± 1.68	65.60 ± 0.59	66.91 ± 0.59	P < 0.001	P < 0.001	P < 0.001	P = 0.001
D95%	68.03 ± 0.97	68.04 ± 0.16	68.06 ± 0.08	P < 0.001	P < 0.001	P < 0.001	NS
D5%	72.15 ± 0.46	71.69 ± 0.35	70.22 ± 1.10	P < 0.001	P < 0.001	P = 0.004	P = 0.005
D1%	72.30 ± 0.47	72.35 ± 0.49	70.84 ± 1.09	P < 0.001	P < 0.001	P < 0.001	P = 0.002
D99%-D1%	-7.12 ± 1.63	-6.75 ± 0.95	-3.93 ± 1.63	P < 0.001	NS	P = 0.002	P = 0.001
D95%-D5%	-4.12 ± 0.92	-3.65 ± 0.34	-2.16 ± 1.09	P < 0.001	NS	P < 0.001	P = 0.002

3DCRT = Three Dimensional Conformal Radiation Therapy; Targeting = Conformal Pelvic Vessel Targeting; Avoidance = Conformal Normal Tissue Avoidance; ANOVA = Repeated Measures Analysis of Variance

ISSN: 1748-717X