Comparison of three diagnostic imaging modalities for use in diabetic inferior arterial lesions

Table 5 Diagnostic value of computerized tomography angiography for different arterial branches in diabetic lower-extremity arterial disease

Degree of stenosis	Arterial branch classification	CTA diagnosis	DSA diagnosis		Kappa	Sensitivity (%)	Specificity (%)	Accuracy (%)
			Moderate/sever	Non-moderate/non-severe
Moderate stenosis	Grade 1	Moderate	51	7	0.900	100.0	93.1	95.4
		Non-moderate	0	94
	Grade 2	Moderate	50	7	0.858	94.3	92.9	93.4
		Non-moderate	3	92
	Grade 3	Moderate	44	5	0.878	93.6	95.2	94.7
		Non-moderate	3	100
Severe stenosis or occlusion	Grade 1	Severe	23	5	0.882	100.0	96.1	96.7
		Non-severe	0	124
	Grade 2	Severe	45	8	0.823	91.8	92.2	92.1
		Non-severe	4	95
	Grade 3	Severe	17	6	0.756	85.0	95.5	94.1
		Non-severe	3	126

CTA: Computerized tomography angiography; DSA: Digital subtraction angiography.