Variability in the analysis of coronary arteriograms

Area of Science:

• Cardiovascular imaging
• Medical diagnostics
• Radiology

Background:

• Coronary arteriography is crucial for diagnosing coronary artery disease.
• Inter-observer variability in interpreting these images can impact clinical decisions.

Purpose of the Study:

• To quantify the variability in coronary arteriogram readings among different interpreters.
• To identify factors influencing the accuracy of stenosis assessment.

Main Methods:

• Eleven readers interpreted cine films from ten patients.
• A three-reader expert panel provided a consensus standard.
• Variability was assessed by comparing individual readings to the panel standard.

Main Results:

• Significant variability was observed between individual readers and the expert panel.
• Average standard deviation for segmental stenosis estimation was 18%.
• Disagreement on the number of major vessels with 70% stenosis occurred 31% of the time.

Conclusions:

• Inter-reader variability in coronary arteriogram interpretation is substantial.
• Factors like distal segment analysis, nonopacified segments, and image quality influence discrepancies.
• Reader experience is the most critical factor for accurate interpretation.