Comparison of quantitative and qualitative coronary angiography : computer versus the eye

Objective: Since visual estimation of the extent of vessel stenosis may vary between operators, we aimed in this study to investigate both inter-observer variability and consistency between the estimation of an operator and quantitative coronary analysis (QCA) measurements.Methods: A total of 147 el...

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Bibliographic Details
Published in:Cardiovascular Journal of Africa 2018-09, Vol.29 (5), p.278-282
Main Authors: Kafes, Habibe, Gozubuyuk, Gokhan, Amasyali, Basri, Aksu, Tolga, Kilit, Celal, Parspur, Afsin, Sen, Taner, Asarcikli, Lale Dinc, Astarcioglu, Mehmet Ali
Format: Article
Language:English
Subjects:
Cardiovascular Topics
Coronary angiography
Coronary stenosis
Quantitative coronary analysis
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Summary:Objective: Since visual estimation of the extent of vessel stenosis may vary between operators, we aimed in this study to investigate both inter-observer variability and consistency between the estimation of an operator and quantitative coronary analysis (QCA) measurements.Methods: A total of 147 elective percutaneous coronary intervention patients with 155 lesions between them were consecutively enrolled in the study. These patients were evaluated for visual estimation of lesion severity by three operators. The lesions were also evaluated with QCA by an operator who was blinded to the visual assessments. Reference diameter, minimal lumen diameter, percentage diameter of stenosis, percentage area of stenosis and diameter of lesion length from the proximal lesion-free segment to the distal lesion-free segment were calculated using a computerised QCA software program.Results: There was a moderate degree of concordance in the categories 70–89% (kappa: 0.406) and 90–99% (κ: 0.5813), whereas in the categories
ISSN:1995-1892
1680-0745
DOI:10.5830/CVJA-2018-024