E.4 CAD OPERATING POINT

Computer-aided detection algorithms often compute an internal “CAD score” for each Single Image Finding detected by the algorithm. In some implementations the algorithms then group the findings into “bins” as a function of their CAD score. The number of bins is a function of the algorithm and the manufacturer’s implementation, and must be one or more. The bins allow an application that is displaying CAD marks to provide a number of operating points on the Free-response Receiver-Operating Characteristic (FROC) curve for the algorithm, as illustrated in Figure E.4-1.

[pic]

Figure E.4-1 - Free-response Receiver-Operating Characteristic (FROC) curve

This is accomplished by displaying all CAD marks of Rendering Intent “Presentation Required” or “Presentation Optional” according to the following rules: