Detection of Aβ plaque deposition in MR images based on pixel feature selection and class information in image level

Table 3 Significance analysis of mapped pixels

	Number of sample sets	1	2	3	4	5	6	7	8	Mean
Number of mapping pixels	Selected pixels by CAGA_filter	311	320	351	333	329	308	321	408	335.13
	Accuracy (%)	77	75	85	69	67	75	71	81	75
	Sensitivity (%)	70	80	75	70	60	75	65	80	72
	Specificity (%)	87	72	91	69	72	75	75	81	78
Significant indices	p	2.68E−51	1.50E−51	3.77E−63	2.21E−54	2.15E−45	2.71E−45	4.27E−53	5.23E−59	6.07E−46
Significant indices	Corr.	0.0138	0.0013	0.0020	0.0007	0.0005	0.0050	0.0165	0.0192	0.0074

‘Number of mapping pixels’: the number of final optimal pixel features; ‘Number of sample sets’: the No of the groups of test sets; ‘Selected pixels by CAGA_filter’: the pixels selected by the CAGA_filter algorithm; p: p value between the selected pixels by the CAGA_filter and those by the random feature selection algorithm; Corr.: correlation coefficient between the selected pixels by the CAGA_filter and those by the random feature selection algorithm

ISSN: 1475-925X