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  • Title: Accuracy of 64-slice CT coronary angiography: our initial experience.
    Author: Prakash A, Ahlawat K, Kaul UA, Tyagi S, Aggarwal B, Rajan S, Kathuria S.
    Journal: Indian Heart J; 2008; 60(4):287-95. PubMed ID: 19242004.
    Abstract:
    OBJECTIVE: The objective of our study was to evaluate the diagnostic accuracy of 64-slice computed tomography coronary angiography to detect haemodynamically significant stenosis (>50% luminal narrowing) in comparison to invasive coronary angiography and further analyze the result accounting for heart rate, coronary calcification and location of lesion in the coronary tree. METHODS AND RESULTS: Forty patients (39 male, 1 female; mean age 50.9 years) underwent both CT coronary angiography and invasive coronary angiography with in a gap of one day. All vessels were included in the study and no patient was excluded due to high heart rate. On per-segment based analysis with invasive coronary angiography as the gold standard, CT coronary angiography correctly identified 62 out of 78 significant stenoses with an overall sensitivity of 79.5% (62 of 78), specificity of 98.5% (532 of 540), positive predictive value of 88.6% (62 of 70) and negative predictive value of 97.1% (532 of 548). CONCLUSION: Our result suggests that 64-slice CT coronary angiography has high diagnostic accuracy to detect haemodynamically significant stenosis.
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