Automatic detection of anomalies in screening mammograms

BMC Medical Imaging

Table 5 Performance of sequential classifiers on the MIAS database

Wavelet basis^§	Classified normal		Classified suspicious		Confidence level (%)
	Actually normal	Actually suspicious	Actually normal	Actually suspicious	C _even *(N)*	C _even *(S)*
Bior 2.8	56	5	149	93	84.3	56.6
Bior 6.8	23	0	126	93	100.0	60.7
Bior 3.7	9	1	117	92	81.1	62.2
Haar	50	5	67	87	82.7	73.1
Db 8	5	3	62	84	44.3	73.9

§Wavelet basis notation: Dbn where n describes the number of coefficients used in the wavelet. Db2 encodes polynomials with two coefficients, i.e. constant and linear components. Biorm.n where n describes the order for decompositiona and m is the order used for reconstruction.
Suspicious images were passed to the next classifier in the chain.

ISSN: 1471-2342