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Table 2 Distribution of normal, non-stenotic, significantly stenotic, and non-evaluable segments among both techniques

From: Coronary computed tomography versus coronary angiography for preoperative coronary assessment before valve surgery

Segment evaluation CCTA CAG
Number Percentage (%) Number Percentage (%)
No significant stenosis Normal segments 513 67.1% 529 69.2%
< 50 lesion 226 29.6% 168 22%
Significant stenosis ≥ 50% lesion 23 3% 21 2.7%
Totally occluded 2 0.3% 3 0.4%
Unevaluable 0 0% 43 5.7%
Total 764 100% 764 100%