Table 2.
Univariable statistical analysis of quantitative data measured in coronary CT angiograms
| Compared data | p value | |
|---|---|---|
| Localization of the main coronary arteries in the aortic sinus: gamma angle (Fig. 4 ) | ||
| LCA | RCA | p < 0.001 |
| LCA+ (from the LCS) | RCA+ (from the RCS) | p < 0.001 |
| LCA+ (from the LCS) | LAD | p = 0.002 |
| RCA+ (from the RCS) | RCA + Cx | p = 0.001 |
| Branching angle of the coronary arteries along the short axis: alpha angle (Fig. 5 ) | ||
| LCS | RCS | p < 0.001 |
| LCA+ (from the LCS) | RCA+ (from the RCS) | p < 0.001 |
| LCA+ (from the LCS) | LAD | p = 0.843 |
| RCA+ (from the RCS) | RCA + Cx | p = 0.202 |
| Branching angle of the coronary arteries along the long axis: beta angle (Fig. 6 ) | ||
| LCS | RCS | p < 0.001 |
| LCA+ (from the LCS) | RCA+ (from the RCS) | p < 0.001 |
| LCA+ (from the LCS) | LAD | p = 0.281 |
| RCA+ (from the RCS) | RCA + Cx | p = 0.667 |
| Ellipticity index (height-to-width ratio; Fig. 7 ) | ||
| LCA or LADa | RCA | p < 0.001 |
| Position of the coronary arteries in the neoaortic sinus (height; Fig. 8 ) | ||
| LCS | RCS | p = 0.002 |
Significant differences (p value less than 0.05) are italicized
RCA right coronary artery, RCA+ right coronary artery arising from the right coronary sinus, LCA left coronary artery, LCA+ left coronary artery arising from the left coronary sinus, LAD left anterior descending coronary artery, Cx circumflex coronary artery, RCS right coronary sinus, LCS left coronary sinus, n number of measurements, CI confidence interval, SD standard deviation, IQR interquartile range
aIn cases of an absent LCA, measurements of the isolated LAD were taken for the analysis of the height-to-width ratio