Cine‐densitometric measurement of coronary arterial stenoses
- 1 January 1979
- journal article
- research article
- Published by Wiley in Catheterization and Cardiovascular Diagnosis
- Vol. 5 (3), 229-245
- https://doi.org/10.1002/ccd.1810050304
Abstract
Computer-aided operator-interactive densitometry has been developed and applied to determine the percent stenosis for obstructive lesions in the coronary arterial tree. Phantom experiments performed to assess system linearity, accuracy of densitometric measurements, nonuniformity in image amplifier response, and the interference of structure noise in measuring precision have been described. Three observers assessed the reproducibility of the method by repeating analyses on 20 stenoses in man recorded on 35-mm cine angiograms. Calculation of the intra- and interobserver errors found that their values significantly decrease with increasing percent stenosis. The reproducibility of the technique was also tested on stenoses that were exposed at multiple angles. The results agreed with those found for the intra- and interoperator errors. Limitations of the densitometric approach and desirability of further automation of the measurements are also discussed.Keywords
This publication has 13 references indexed in Scilit:
- Biplane Angiographic Volumetry Using the Right Anterior Oblique and Half-Axial Left Anterior Oblique TechniqueRadiology, 1978
- Measurement of Atherosclerotic Luminal Irregularity and Obstruction By Radiographic DensitometryInvestigative Radiology, 1977
- Quantitative coronary arteriography: estimation of dimensions, hemodynamic resistance, and atheroma mass of coronary artery lesions using the arteriogram and digital computation.Circulation, 1977
- Variability in the analysis of coronary arteriograms.Cell Metabolism, 1977
- Densitometric Assessment Of Stenoses In Coronary ArteriesPublished by SPIE-Intl Soc Optical Eng ,1976
- Comparison of observer performance with 16 mm cinefluorography and 70 mm camera fluorography in coronary arteriographyThe American Journal of Cardiology, 1975
- Methods of Studying the Proximal Left Anterior Descending Coronary ArteryRadiology, 1974
- The Half-Axial ProjectionCirculation, 1973
- Quantitative Angiography: The Measurement of Coronary Vasomobility in the Intact Animal and ManChest, 1971
- Some Examples of Statistical Methods of Research in Agriculture and Applied BiologyJournal of the Royal Statistical Society Series B: Statistical Methodology, 1937