Consistent performance measurement of a system to detect masses in mammograms based on blind feature extraction

Table 1 Distribution of prototypes for the different scanners

Distribution of prototypes for the different scanners
Scanner	Pathology	Learning	Test
HOWTEK 960 (MGH)	Malignant	345	851
43.5μ m / pixel	Benign	485	648
linear calibration	Normal	312	2410
HOWTEK MultiRAD 850 (WU)	Malignant	107	1089
43.5μ m / pixel	Benign	154	979
linear calibration	Normal	417	2305
DBA M2100 (MGH)	Malignant	105	1091
42μ m / pixel	Benign	0	1133
logarithmic calibration	Normal	1668	1054
LUMISYS 200 laser (WFU & SH)	Malignant	639	557
50μ m / pixel	Benign	494	639
linear calibration	Normal	325	2397
	Malignant	1077	119
Overall	Benign	1028	105
	Normal	2441	281

Distribution of prototypes in the learning and test sets for the different scanners used, and without considering the scanner (overall results). In parentheses next to the scanner’s name is the identification of the institutions in which that make of scanner was used.

ISSN: 1475-925X