Table 4.

Results from the three-way ANOVA conducted with the human-observer scores. The analysis tested reconstruction strategy, observer, and lesion contrast as factors. The contrast and strategy effects were both significant at the α = 0.05 level.

Factor	df	ss	F	Pr(>F)
Strategy	1	0.019	8.23	0.045
Observer	2	0.015	3.21	0.15
Contrast	2	0.53	113.68	0.0003
Strategy:Observer	2	0.0027	0.58	0.60
Strategy:Contrast	2	0.00017	0.036	0.96
Observer:Contrast	4	0.012	1.24	0.42
Residuals	4	0.0093