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

Table 3

CT and ICA finding in 27 patients.

Segments ()/vessels ()	Per-segment analysis				Per-vessel analysis
	CTA	CTP (stress induced)		ICA	CTA	CTP (stress induced)		ICA
		Positive	Negative	Significant		Positive	Negative	Significant
40–70%	46	29	17	27	23	15	8	13
Nonsignificant; (40–49%)	5	3	2	2	3	2	1	2
Significant; (50–70%)	41	26	15	25	20	13	7	11
10–39%	36	0	36	0	32	0	32	0
>70%	26	25	1	25	26	25	1	25
≥50%	67	54		52	46	40		38
CTP overruling decision (falsely)		3 ()	16 ()			2 (0)	8 ()

Only segments with minimal 10% stenosis were included for analysis. Cut-off for significant stenosis was 50%. CTA: computed tomography angiography; CTP: computed tomography perfusion; ICA: invasive coronary angiography.