Table 2 Diagnostic accuracy of MSCT for the detection of significant (⩾50% luminal narrowing) stenoses.

	Segment based	Vessel based	Patient based
Evaluable (%)	98 (236/241)	99 (76/77)*	100 (20/20)
Sensitivity (%)	91 (42/46)	92 (23/25)	92 (12/13)
Specificity (%)	97 (185/190)	96 (49/51)	86 (6/7)
PPV (%)	89 (42/47)	92 (23/25)	92 (12/13)
NPV (%)	98 (185/189)	96 (49/51)	86 (6/7)

Data are percentages (segments).

*In one patient the left circumflex artery was uninterpretable due to its small size, whereas in three patients both the left anterior descending coronary artery and the left circumflex were supplied by patent grafts. In these patients, the left main artery was not evaluated.

MSCT, multislice computed tomography; NPV, negative predictive value; PPV, positive predictive value.