In vitro analysis of boundary identification techniques used in quantification of two-dimensional echocardiograms |
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Authors: | D A Conetta E A Geiser D J Skorton N G Pandian R E Kerber C R Conti |
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Institution: | 1. From the University of Florida College of Medicine, Department of Medicine, Gainesville, Florida, USA;2. The University of Iowa College of Medicine, Department of Internal Medicine, Iowa City, Iowa, USA |
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Abstract: | Echocardiographic cross-sectional areas of 10 formalin-fixed animal left ventricles were determined by 5 independent observers using black-white (B-W) and mid-spot (M-S) endocardial boundary identification techniques. The echocardiographic cross-sectional areas were compared with the true anatomic cross-sectional areas of the same 10 hearts to determine the accuracy, variability and reliability of each technique. The results of these comparisons revealed that the M-S technique was more accurate than the B-W technique (3.3 +/- 7.2 vs 34.9 +/- 8.6% error). However, the B-W technique was more reliable in that it had a smaller interobserver and estimated intraobserver variability. The M-S technique had a 6% greater intraobserver variability. |
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Keywords: | Address for reprints: Donald A Conetta MD University of Florida College of Medicine Box J-277 JHM Health Center Gainesville Florida 32610 |
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