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. Author manuscript; available in PMC: 2010 Mar 1.

Published in final edited form as: Comput Med Imaging Graph. 2009 Jan 3;33(2):148–153. doi: 10.1016/j.compmedimag.2008.11.002

Table 1.

Definitions of true/false positive/negative

		Detected Pixel
		Lesion	Background
Actual Pixel	Lesion	True Pos. (TP)	False Neg. (FN)
Actual Pixel	Background	False Pos. (FP)	True Neg. (TN)