Table 3. Receiver operating characteristics curve analysis for predicting FFR <0.8.

	Best cut-off	Sensitivity	Specificity	AUC	Accuracy
3D-QCA DS%	51.3%	67%	65%	0.72	66%
3D-QCA MLA	2.37 mm2	73%	71%	0.77	73%
IVUS MLA	3.01 mm2	71%	65%	0.73	68%

FFR, fractional flow reserve, QCA, quantitative coronary angiography; MLA, minimum lumen area; IVUS, intravascular ultrasound.