Key result
Cardiac silhouette volume measured from chest roentgenograms correlated favorably with angiographic left heart volumes (r = 0.78, P < 0.01; 79% accuracy), outperforming the cardiothoracic ratio.
Why the study?
How accurate are chest X-ray measurements compared to quantitative biplane angiography for assessing left heart enlargement in adults with heart disease?
Population
254 adults with various heart diseases
Comparison
Chest X-ray measurements vs Quantitative biplane angiographic data
Design
Cross-sectional
Authors
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Supports cardiac silhouette volume as a chest X-ray correlate of left heart size; leaves open validation against modern imaging.
Observational (n=254)
How accurate are chest X-ray measurements compared to quantitative biplane angiography for assessing left heart enlargement in adults with heart disease?
Effect estimate: r = 0.78
p-value: p=< 0.01
Glover et al. (1973) conducted an observational in Various heart diseases (n=254). Chest roentgenograms (cardiac silhouette volume) vs. Quantitative biplane angiographic data was evaluated on Correlation of cardiac silhouette volume with the sum of left ventricular mass, end-diastolic volume, and left atrial maximal volume (r = 0.78, p=< 0.01). Cardiac silhouette volume measured from chest roentgenograms correlated favorably with angiographic left heart volumes (r = 0.78, P < 0.01; 79% accuracy), outperforming the cardiothoracic ratio.
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