Preliminary findings on diagnostic performance of computed tomography perfusion images for intracranial arterial stenosis: a retrospective study

Table 2 Area under the curve (AUC) of ROC analysis of each intracranial artery before and after addition of CTP

Radiologist	Images	ICA N = 42	MCA N = 42	ACA N = 42	VA N = 52	BA N = 26	PCA N = 52
R1	CTA	0.847*	0.934*	0.625 (0.42)	0.743 (0.06)	0.979*	0.390 (0.601)
R1	CTA + CTP	0.907*	0.933*	0.750 (0.10)	0.764*	0.969*	0.575 (0.721)
R2	CTA	0.776*	0.927*	0.609 (0.48)	0.748 (0.05)	1.000*	0.390 (0.601)
R2	CTA + CTP	0.887*	0.981*	0.750 (0.10)	0.846 *	0.990*	0.585 (0.686)

DSA, digital subtraction angiography; ICA, internal carotid artery; MCA, middle cerebral artery; ACA, anterior cerebral artery; VA, vertebral artery; BA, basilar artery; PCA, posterior cerebral artery; CTA, computed tomographic angiography; CTP, computed tomographic perfusion
Values in parentheses are p-values. *p < 0.05 indicating the significance of ROC curve

ISSN: 1471-2377