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Reproducibility of coronary arteriographic reading in the coronary artery surgery study



Reproducibility of coronary arteriographic reading in the coronary artery surgery study



Catheterization & Cardiovascular Diagnosis 8(6): 565-576



Arteriograms (870) from the Coronary Artery Surgery Study (CASS) were independently read by readers at 2 different clinics to evaluate the reproducibility of the interpretation of coronary arteriograms. Among proximal segments, the interpretation of lesions of the left main coronary artery were the least reproducible (P < 0.02). When one angiographer reads a stenosis of .gtoreq. 50% in the left main coronary artery, it is estimated that a second reader will report no lesion 18.6% of the time. In 94.7% of the films, the number of significantly (.gtoreq. 70% stenosis) diseased vessels was the same for both readers (72.1%) or differed by 1 vessel (22.6%). The reproducibility of interpretation of films of good or acceptable quality or completeness was better than the reproducibility readings of arteriograms judged to be of poor quality or incomplete studies. The mean absolute difference between readings of the percent stenosis decreased over the time of the patient enrollment, 1975-1978. This may have resulted from major collaborative efforts made during the course of the study to improve the quality of angiography and to standardize the reading of the cine films.

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Accession: 006315158

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PMID: 7151153


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