Bilateral Image Subtraction and Multivariate Models for the Automated Triaging of Screening Mammograms

Table 1

Summary of the top 50 univariate features.

Type	-normalization		-rank
	Healthy vs Calcifications	Healthy vs Masses	Healthy vs Calcifications	Healthy vs Masses
Raw features	25	25	16	24
Symmetric	17	17	20	17
Registered	8	8	14	9

Number of features by type.