[Variability in the interpretation of coronary angiograms by different specialists based on data from the cooperative...

Area of Science:

• Cardiovascular Imaging
• Medical Diagnostics
• Radiology

Background:

• Coronary arteriography is a key diagnostic tool for assessing coronary artery disease.
• Interpreting arteriographic findings involves subjective assessment, potentially leading to variability.
• Understanding variability is crucial for reliable diagnosis and treatment planning.

Purpose of the Study:

• To quantify and compare intra-reader and inter-reader variability in interpreting coronary arteriographic films.
• To assess variability in evaluating coronary stenosis, extent of disease, film quality, and study completeness.
• To identify specific coronary segments with higher inter-reader variability.

Main Methods:

• Retrospective analysis of cine arteriographic films from 30 patients with coronary artery disease.
• Three experienced observers independently read each film twice.
• Data collected included stenosis severity, number of diseased vessels, film quality, and study completeness.

Main Results:

• Intra-reader variability was significantly lower than inter-reader variability for stenosis assessment (p < 0.001).
• Inter-reader variability was significantly greater than intra-reader variability for disease extent (p < 0.01) and film quality/completeness (p < 0.01).
• Higher inter-reader variability was noted in the left main coronary artery and proximal left anterior descending artery.

Conclusions:

• Significant inter-reader variability exists in interpreting coronary arteriography, impacting diagnostic consistency.
• Variability is pronounced in assessing stenosis, disease extent, and image quality, particularly in critical coronary segments.
• Standardization of interpretation protocols may be necessary to improve diagnostic reliability.