Table 3. FD-OCT imaging procedural data for target vessels.

Variables	Patients without spotty calcification (n=185)	Patients with spotty calcification (n=123)	P value
Number of imaged vessels
Single vessel, n (%)	140 (75.7)	95 (77.2)	0.85
Double vessel, n (%)	35 (18.9)	19 (15.4)	0.78
Triple vessel, n (%)	10 (5.4)	8 (6.5)	0.89
Averaged number of pullbacks	2.1±0.5	2.3±0.4	0.80
Length of imaged vessels
LAD (mm)	85±14	82±11	0.62
LCX (mm)	48±11	52±10	0.50
RCA (mm)	90±21	88±18	0.75

FD-OCT, frequency-domain optical coherence tomography; LAD, left anterior descending artery; LCX, left circumflex artery; RCA, right coronary artery.