Measurement criteria for group echocardiographic studies.
Measurement criteria for group echocardiographic studies.
复制标题
团体超声心动图研究的测量标准。
DOI：
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发表时间：
1979
影响因子：
5
通讯作者：
R. Lauer
中科院分区：
文献类型：
--
作者：
R. Schieken;W. Clarke;L. Mahoney;R. Lauer
本研究报告了使用学龄儿童的标准测量标准测量左心超声心动图尺寸的观察者内部和观察者之间所实现的可重复性。这些标准将可接受的界面定义为： 1) 单一主线； 2) 测量点长度至少为 5 mm 的连续性； 3)显示待测心脏结构的具体运动特征。室间隔、舒张期尺寸、收缩期尺寸、左心室后壁、左心房和主动脉的观察者组内相关系数平均为0.94（范围0.87--0.98）。变异系数平均为 3.6%（范围 2--7.5%）。最不可重复的尺寸是左心室后壁。对于所有测量，超声心动图确定的心脏尺寸的单个受试者的日常变异性都很小。所有变量的误差标准偏差不超过0.3毫米。使用筛选标准和标准化测量技术的系统可以提供开始调查小组研究中超声心动图差异所需的精确度。
This study reports the reproducibility achieved both within an observer and between observers measuring left heart echocardiographic dimensions using standard measurement criteria in school age children. These criteria define acceptable interfaces as: 1) a single dominant line; 2) continuity at the point of measurement of at least 5 mm in length; and 3) display of specific motion characteristics for the cardiac structure to be measured. The within observer intraclass correlation coefficient for interventricular septum, diastolic dimension, systolic dimension, left ventricular posterior wall, left atrium and aorta averaged 0.94 (range 0.87--0.98). The coefficient of variation averaged 3.6% (range 2--7.5%). The least reproducible dimension was left ventricular posterior wall. The day-to-day variability within a single subject of echocardiographic determined cardiac dimensions was small for all measurements. The standard deviation of error for all variables was no more than 0.3 mm. A system using screening criteria and standardized measurement techniques can provide the degree of precision necessary to begin investigating echocardiographic differences in group studies.