Table 2.
Outcome in lesions with mild/no calcification and severe calcification.
| Mild/no calcification (n=36) | Severe calcification (n=16) | P value | |
|---|---|---|---|
| FFR | 0.68±0.17 | 0.64±0.21 | 0.43 |
| Stenosis by MDCT | 66.7±11.6 | 67.8±12.0 | 0.77 |
| Reference diameter by QCA (mm) | 2.66±0.56 | 2.65±0.63 | 0.93 |
| Diameter stenosis by QCA (%) | 61.1±11.1 | 60.5±12.9 | 0.88 |
| False-positive, n (%) | 10 (27.8) | 5 (31.2) | 1.0 |
| False-negative, n (%) | 1 (2.8) | 2 (12.5) | 0.22 |
False positive=stenosis on MDCT >50% and on FFR >0.75, false-negative=stenosis on MDCT <50% and on FFR <0.75, FFR=fractional flow reserve, MDCT=multidetector computed tomography, QCA=quantitative coronary angiography.