Table 3.
Dd-s of coronary arteries in three-dimensional directions
| Coronary artery | Anterior–posterior
|
Left–right
|
Superior–inferior
|
||||||
|---|---|---|---|---|---|---|---|---|---|
| Observer 1 | Observer 2 | Kappa* | Observer 1 | Observer 2 | Kappa* | Observer 1 | Observer 2 | Kappa* | |
| LCA | 3.7 ± 2.4 | 4.1 ± 2.4 | 0.789 | 4.1 ± 2.4 | 4.2 ± 2.0 | 0.840 | 4.7 ± 1.2 | 4.3 ± 1.4 | 0.614 |
| (0.5, 7.2)* | (1.3, 7.7) | (0.8, 8.0) | (1.4, 9.3) | (2.3, 6.9) | (2.5, 7.9) | ||||
| RCA | 6.0 ± 2.9 | 6.4 ± 3.4 | 0.779 | 5.3 ± 3.3 | 5.0 ± 3.5 | 0.648 | 5.7 ± 3.1 | 5.6 ± 2.8 | 0.687 |
| (0.4, 9.2) | (0.7, 10.5) | (1.2, 13.3) | (0.8, 13.8) | (1.1, 13.8) | (1.8, 13.0) | ||||
| LAD | 4.2 ± 3.3 | 3.8 ± 3.0 | 0.801 | 5.3 ± 3.7 | 5.8 ± 3.4 | 0.670 | 4.6 ± 3.2 | 4.9 ± 3.2 | 0.614 |
| (0.5, 11.8) | (1.0, 12.6) | (0.5, 13.8) | (0.3, 12.7) | (1.2, 13.2) | (1.6, 13.9) | ||||
| LCxA | 3.5 ± 3.0 | 3.9 ± 2.9 | 0.511 | 6.7 ± 4.3 | 6.5 ± 4.3 | 0.687 | 5.8 ± 1.2 | 6.0 ± 1.7 | 0.570 |
| (0.1, 11.8) | (0, 10.7) | (0.3, 12.2) | (0.5, 12.7) | (4.5, 9.6) | (3.7, 10.6) | ||||
| RMA | 3.8 ± 3.6 | 3.5 ± 3.3 | 0.591 | 3.8 ± 2.4 | 3.6 ± 2.8 | 0.614 | 5.3 ± 3.7 | 5.4 ± 3.9 | 0.640 |
| (0.3, 13.3) | (0.8, 12.6) | (0.8, 8.2) | (1.3, 9.4) | (0.4, 11.1) | (0.7, 11.8) | ||||
Notes:
*
Cohen’s kappa coefficient is usually characterized as excellent for a kappa coefficient of >0.75, fair to good for coefficients between 0.40 and 0.75, and poor for values of <0.40. Values are given in mm as mean ± SD (95% CI).
Abbreviations: Dd-s, the displacement between the end diastolic and end systolic phase; SD, standard deviation; LCA, left main coronary artery; RCA, right main coronary artery; LAD, left anterior descending artery; LCxA, left circumflex artery; RMA, right marginal artery; SD, standard deviation; CI, confidence interval.