使用半自动系统测定左心室容积的可重复性。

Reproducibility of left ventricular volume determinations with use of a semi-automated system.

作者信息

Loertscher R, Burkart F, Schmitt H E, Emmenegger H

出版信息

Cardiovasc Intervent Radiol. 1984;7(2):53-8. doi: 10.1007/BF02552679.

Abstract

Reliability of a computer-assisted system for determination of left ventricular volumes was judged by multiple measurements of rotation ellipsoids, cadaver hearts, and cineangiograms from patients. The volume measurements in cadaver hearts provided a volume correction factor necessary for reproducible results. Variation coefficient for intraobserver and interobserver variability did not exceed 2.3% when calculated using rotation ellipsoids and was highest at 12.0% for the end-systolic volumes derived from patient films. When appropriate calibration methods are employed, different observers can make reliable left ventricular volume measurements aided by such systems.

摘要

通过对旋转椭球体、尸体心脏以及患者的心血管造影影片进行多次测量，来判断一种用于测定左心室容积的计算机辅助系统的可靠性。对尸体心脏的容积测量提供了获得可重复结果所需的容积校正因子。当使用旋转椭球体进行计算时，观察者内和观察者间变异的变异系数不超过2.3%，而从患者影片得出的收缩末期容积的变异系数最高为12.0%。当采用适当的校准方法时，不同的观察者借助此类系统能够进行可靠的左心室容积测量。