Videodensitometry versus digital calipers for quantitative coronary angiography
- 15 November 1990
- journal article
- research article
- Published by Elsevier BV in The American Journal of Cardiology
- Vol. 66 (17), 1186-1190
- https://doi.org/10.1016/0002-9149(90)91096-o
Abstract
Single-plane left coronary angiograms in 18 patients were prospectively analyzed using videoden-sitometry (XR-70 system) and handheld digital calipers to compare arterial dimensions, stenosis dimensions, intraobserver variability and interobserver variability for the methods. A total of 648 arterial segments were measured, yielding a highly significant correlation between videodensitometry and caliper-determined cross-sectional area (r = 0.96, p=0.0001). Similarly, a highly significant linear relation was observed between videodensitometry and caliper-determined diameter (r = 0.95, p=0.0001). When data subsets for small, medium and large arterial segments were examined, higher variability in the correlation between videodensitometry and caliper-determined area was observed in the large segments (>10 mm2). In addition, caliper-estimated areas tended to be slightly smaller than videodensitometry-estimated areas in these segments. For diameter estimations, correlations between caliper and videodensitometry data were similar for the entire range of arterial segment sizes. Intra- and interobserver variability was low for both caliper and videodensitometry determination of diameter or area. Thus, over a wide range of arterial dimensions, results obtained with caliper estimates of luminal area and diameter are comparable to those obtained with videodensitometry using the XR-70 system.Keywords
This publication has 5 references indexed in Scilit:
- Cinevideodensitometric analysis of the effect of coronary angioplasty on coronary stenotic dimensionsAmerican Heart Journal, 1988
- Assessment, of coronary angioplasty: Comparison of visual assessment, hand‐held caliper measurement and automated digital quantitationCatheterization and Cardiovascular Diagnosis, 1988
- Quantitative analysis of coronary arteriograms by microprocessor cinevideodensitometryCatheterization and Cardiovascular Diagnosis, 1987
- A new digital electronic caliper for measurement of coronary arterial stenosis: Comparison with visual estimates and computer-assisted measurementsThe American Journal of Cardiology, 1984
- Quantitative coronary arteriography: estimation of dimensions, hemodynamic resistance, and atheroma mass of coronary artery lesions using the arteriogram and digital computation.Circulation, 1977