. Author manuscript; available in PMC: 2012 Aug 21.

Published in final edited form as: Nucl Instrum Methods Phys Res A. 2011 Aug 21;648 Supplement 1:S297–S301. doi: 10.1016/j.nima.2010.11.042

Table 1.

This table illustrates a hypothetical FROC data set and the corresponding FROC operating points. It corresponds to a 6-rating FROC study where 1 = very low confidence in presence of lesion and 6 = definite lesion.

	TOTAL	BINS AND COUNTS
	TOTAL	Bin 1	Bin 2	Bin 3	Bin 4	Bin 5	Bin 6
NL	Unknown	9	16	20	5	13	8
LL	98	5	5	6	5	5	24
FROC		OPERATING POINTS
FROC		Bins ≥ 6	Bins ≥ 5	Bins ≥ 4	Bins ≥ 3	Bins ≥ 2	Bins ≥ 1
NLF		0.080	0.210	0.260	0.460	0.620	0.710
LLF		0.245	0.296	0.347	0.408	0.459	0.510