Table 1. Baseline lesion characteristics by 2-dimensional and 3-dimensional quantitative coronary angiography.

Index	Stratification	2D-QCA	3D-QCA	P value*
DS%	Overall	45.7±10.8	48.4±9.6	<0.001
	LAD	44.2±10.4	47.6±8.7	<0.001
	RCA	45.8±9.9	48.5±9.4	<0.001
	LCx	49.6±11.9	50.5±11.6	0.32
Lesion length (mm)	Overall	12.4±6.5	23.2±13.4	<0.001
	LAD	12.7±6.4	24.5±12.1	<0.001
	RCA	13.1±7.3	24.6±15.4	<0.001
	LCx	10.6±5.5	17.7±10.2	<0.001
MLD (mm)	Overall	1.55±0.44	1.47±0.40	<0.001
	LAD	1.55±0.41	1.47±0.36	<0.001
	RCA	1.71±0.45	1.59±0.43	<0.001
	LCx	1.37±0.44	1.30±0.43	0.01
Reference diameter (mm)	Overall	2.84±0.55	2.84±0.50	0.13
	LAD	2.76±0.51	2.82±0.44	<0.001
	RCA	3.12±0.57	3.07±0.53	0.78
	LCx	2.68±0.51	2.62±0.49	0.03

All variables are presented by mean ± SD. *, DS% by 3D-QCA and 2D-QCA was compared by paired Student’s t-test; lesion length, MLD and reference diameter by 3D-QCA and 2D-QCA were compared by Wilcoxon’s rank test. 2D-QCA, 2-dimensional quantitative coronary angiography; 3D-QCA, 3-dimensional quantitative coronary angiography; DS%, percent diameter stenosis; LAD, left anterior descending artery; LCx, left circumflex; MLD, minimum luminal diameter; RCA, right coronary artery.