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VALUE OF 256-SLICE CT IN CORONARY STENOSIS WITH HIGH CALCIUM SCORE
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Abstract
Objectives: study the value of 256-slice coronary CT angiography in the diagnosis of coronary artery stenosis with high Agaston calcium scores. Subjects and methods: a cross-sectional descriptive study of the cases with 256-slice CT and DSA coronary angiography from Jan 2020 to Sep 2022. Results: 46 patients were included in the study with Agaston calcification score ≥ 400, with 29 male and 17 female. The mean age was 70.17±10.51 (41 to 93 years old), mainly age of over 60 with 78.26%, the mean age of men was lower than that of women (p<0.05). At the patient level, the value of 256 slice CT in the diagnosis of coronary stenosis ≥50% has a Se: 97.7%, Sn: 50%, PPV: 97.7%, NPV: 50%, Acc: 97.7%. The diagnostic agreement of 256 slice CT and DSA was good on branches as LAD and LCx with calcification ≤400 (kappa: 0.62 and 0.85). Diagnostic agreement was moderate for remaining branches (kappa: 0.5 to 0.62). The value of diagnostic significant stenosis of 256-slice CT compared with DSA on arterial segment has an accuracy ranging from 71.7% to 97.5%. Conclusion: The value of 256 slice CT in significant coronary stenosis is reliable for cases with high calcium scores.
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Keywords
coronary stenosis, coronary calcium, 256-sequence CT.
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