Insights into Imaging

Table 2 Sensitivity, specificity, positive predictive value and negative predictive value of the CTA (area)- and CTA (diameter)-based measurements

From: Grading of carotid artery stenosis with computed tomography angiography: whether to use the narrowest diameter or the cross-sectional area

Method	Sensitivity	Specificity	PPV	NPV
CTA (area)	0.81	0.77	0.84	0.72
CTA (diameter)	0.23	1	1	0.45

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