Table 1. Image quality of different coronary arteries.

Characteristic	Total	RCA	LM/LAD	LCX
Number of segments	1317	352	530	435
Image quality score (mean±SD)	1.17±0.47	1.19±0.54	1.15±0.44	1.18±0.45
Percentage of segments with score
1	87.2 (1148/1317)	88.1 (310/352)	88.3 (468/530)	85.1 (370/435)
2	9.3 (122/1317)	6.0 (21/352)	9.1 (48/530)	12.2 (53/435)
3	3.3 (43/1317)	5.4 (19/352)	2.3 (12/530)	2.8 (12/435)
4	0.3 (4/1317)	0.6 (2/352)	0.4 (2/530)	0 (0/435)

LAD, left anterior descending artery; LCX, left circumflex artery; LM, left main artery; RCA, right coronary artery; SD, standard deviation.