Regadenoson-Stress Dynamic Myocardial Perfusion Improves Diagnostic Performance of CT Angiography in Assessment of Intermediate Coronary Artery Stenosis in Asymptomatic Patients

Table 4

Diagnostic accuracy of CTA alone and CTA + CTP to detect significant (≥50%) stenosis.

	Per-segment analysis			Per-vessel analysis
	CTA	CTA + rsCTP	value	CTA	CTA + rsCTP	value
Sensitivity (%)	96 (48/50)	98 (50/51)	0.625	95 (35/37)	97 (37/38)	0.375
Specificity (%)	68 (39/57)	96 (55/57)	0.002	75 (33/44)	95 (41/43)	0.012
PPV (%)	73 (49/67)	96 (50/52)		76 (35/46)	95 (37/39)
NPV (%)	95 (39/41)	98 (55/56)		94 (33/35)	98 (41/42)

McNemar test was used for improvement assessment in sensitivity and specificity. CTA: computed tomography angiography; CTP: computed tomography perfusion.