TABLE 8

Summary of Tables 2–7 Averaged Over All Observers and All Regions

Algorithm	FF							A_L
Algorithm		Lungs	Liver	Soft tissue	Average over all regions	Lungs	Liver	Soft tissue	Average over all regions
FBP	0.63	0.60	0.50	0.58	0.65	0.50	0.49	0.55
OSEM	0.56	0.37	0.47	0.47	0.59	0.27	0.44	0.43
AWOSEM	0.69	0.60	0.62	0.64	0.76	0.49	0.63	0.63

FF = fraction of actual targets found; A_L = area under fitted AFROC curves.