Table 2.
No. of Segments ≥1.5 mm On QCA |
No. of Assessable Segments on CMRA |
Causes of Nonassessibility | Image Quality of CMRA |
|||
---|---|---|---|---|---|---|
Poor
opacification |
Motion
artifacts |
Small
caliber |
||||
LM | 101 | 101(100%) | 0 | 0 | 0 | 3.4 ± 0.5 |
LAD | ||||||
Proximal | 101 | 97(96%) | 3 | 1 | 0 | 3.3 ± 0.7 |
Mid | 98 | 93(95%) | 3 | 2 | 0 | 3.3 ± 0.8 |
Distal | 84 | 74(88%) | 3 | 5 | 2 | 3.1 ± 1.0 |
Diagonal branches | 116 | 100(86%) | 7 | 4 | 5 | 3.1 ± 1.0 |
LCX | ||||||
Proximal | 100 | 97(97%) | 1 | 2 | 0 | 3.3 ± 0.7 |
Distal | 79 | 74(94%) | 2 | 2 | 1 | 3.2 ± 0.8 |
Marginal branches | 111 | 99(89%) | 4 | 5 | 3 | 2.9 ± 1.0 |
RCA | ||||||
Proximal | 101 | 101 (100%) | 0 | 0 | 0 | 3.4 ± 0.5 |
Mid | 101 | 101 (100%) | 0 | 0 | 0 | 3.4 ± 0.5 |
Distal | 94 | 91(97%) | 2 | 1 | 0 | 3.3 ± 0.7 |
PDA/PL | 95 | 76(80%) | 8 | 7 | 4 | 2.8 ± 1.1 |
Total | 1181 | 1104(94%) | 33 | 29 | 15 | 3.2 ± 0.8 |
Data are expressed as means ± SD. QCA = quantitative coronary angiography; LAD = left anterior descending coronary artery; LCX = left circumflex coronary artery; LM = left main coronary artery; RCA = right coronary artery; pro = proximal; mid = middle; dis = distal.