Reproducibility of left ventricular area and volume measurements using a computer endocardial edge-detection algorithm in normal subjects.
Reproducibility of left ventricular area and volume measurements using a computer endocardial edge-detection algorithm in normal subjects.
复制标题
在正常受试者中使用计算机心内膜边缘检测算法测量左心室面积和体积的可重复性。
DOI：
10.1016/0002-9149(85)90410-2
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
C. Conti
中科院分区：
文献类型：
--
作者：
D. Conetta;E. Geiser;L. H. Oliver;A. Miller;C. Conti
The variability of serially recorded 2-dimensional echocardiograms in normal subjects was determined. During a 2-week period, 10 normal subjects underwent echocardiography 5 times, in 2 laboratories, with use of different ultrasonographs. The video recordings were analyzed using a computer image analysis system (Quantic 1200) to provide standardized left ventricular short-axis areas and area ejection fraction (EF). Left ventricular volumes and volume EF were calculated. The 95% confidence limits of the percent difference for end-diastolic area and volume between 2 samples in a given subject were ± 16.8 and ± 16.7%, respectively. The limits for end-systolic area and volume were ± 15.8 and ± 17.0%, respectively. The 95% confidence limits for differences of area and volume EF between 2 recordings were ± 12.8 and ± 9.7%, respectively. No correlation was found between clinical grade (image quality) and the variability of area measurements. A good correlation (r = 0.98) was found between area and volume EF for any given subject over the 5 observations. These confidence limits are narrower than those previously recorded.
DOI：
10.1016/0002-9149(83)90146-7
发表时间：
1983
期刊：
The American journal of cardiology
影响因子：
--
作者：
Wyatt,HL;Haendchen,RV;Meerbaum,S;Corday,E
通讯作者：
Corday,E