. Author manuscript; available in PMC: 2015 Sep 1.

Published in final edited form as: Radiother Oncol. 2014 Jul 1;112(3):418–424. doi: 10.1016/j.radonc.2014.05.011

Table 4.

The results of the statistical analysis of the variances in tumor control probability (TCP) for the gross and clinical target volumes (GTV and CTV) as well as in normal tissue complication probability (NTCP) for small intestine are shown for the Atlas-assisted and Control groups (p-value for Brown-Forsythe test for difference in variance). The small intestine was the only OAR that showed some risk for complications, which consequently also represents the overall NTCP. Here, the TCPs were calculated for every observer’s treatment plan and the organ delineation sets of all the observers of the group (atlas or control).

	ROI	Group	Standard Deviation Phase 1	Standard Deviation Phase 2	p-value (* = p < 0.05)
TCP	GTV	Control	0.57	0.50	0.62
	GTV	Atlas	0.94	0.40	<0.001*

	CTV	Control	15.50	7.28	0.54
	CTV	Atlas	18.11	1.23	0.001*

NTCP	Small Intestine	Control	0.42	0.70	0.06
NTCP	Small Intestine	Atlas	0.76	0.68	0.049*