Table 2.
Angiographic and optical coherence tomography measurements of the LM lesions.
| QCA (n = 88) | FD-OCT (n = 88) | p value | |
|---|---|---|---|
| LM length, mm | 14.65 ± 5.3 | 12.48 ± 5.1 | <0.001 |
| Lesion length, mm | 3.20 ± 1.5 | 3.72 ± 2.0 | 0.032 |
| Reference lumen diameter, mm | 3.79 ± 0.6 | 4.05 ± 0.6 | <0.001 |
| Minimum lumen diameter, mm | 2.07 ± 0.5 | 2.46 ± 0.6 | <0.001 |
| Percent diameter stenosis (%) | 44.78 ± 15.4 | 38.66 ± 14.4 | <0.001 |
| Reference lumen area, mm2 | — | 13.14 ± 4.1 | |
| Minimum lumen area, mm2 | — | 5.82 ± 2.9 | |
| Percent area stenosis (%) | — | 55.04 ± 18.7 |
Values are presented as n (%) or mean ± standard deviation. FD-OCT = frequency-domain optical coherence tomography; LM = left main; n = number of patients; QCA = quantitative coronary angiography.