Reproducibility of Echocardiographic Left Ventricular Measurements
Reproducibility of Echocardiographic Left Ventricular Measurements
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DOI：
10.1161/01.hyp.9.2_pt_2.ii6
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发表时间：
1987-02
期刊：
影响因子：
8.3
通讯作者：
D. Wallerson;R. Devereux
中科院分区：
文献类型：
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作者：
D. Wallerson;R. Devereux
通过仔细执行和解释研究，可以产生具有可接受的测量重复性的连续超声心动图。以下建议已被证明可以提高再现性。 1) 严格遵守质量控制对于生成最高技术质量的超声心动图是必要的。超声技师应该了解技术上充分的研究的定义——包括正确的波束或平面角度以及界面的连续可视化——并在每项研究中寻求这一理想。超声医师参与测量可以增强对准确定量超声心动图要求的认识。定期机器校准是准确定量超声心动图的先决条件。 2) 必须付出相当大的努力来标准化每个声窗的位置和患者成像的角度——记录与这些规范的偏差以供将来参考。如果可能的话，应在呼气末进行测量。如果不可能，测量连续几次心跳将限制呼吸变化的影响。 3) 应采用统一的测量惯例。 M 型测量的最佳候选者是美国超声心动图协会关于一般测量的建议和用于计算 M 型左心室质量的 Penn 公约。需要更多数据来确定哪种二维测量方法能够最好地结合准确性和再现性。 4) 通过测量多次心跳的相关参数并使用平均值作为结果，并通过让至少两个读取器解释每个超声心动图，可能每个读取器有两个单独的读数，可以使超声心动图的解释最具可重复性。
Serial echocardiograms with acceptable reproducibility of measurements may be produced by careful performance and interpretation of the studies. The following recommendations have been shown to enhance reproducibility. 1) Strict adherence to quality control is necessary to generate echocardiograms of the highest technical quality. Sonographers should be aware of the definition of a technically adequate study – including correct beam or plane angulation and continuous visualization of interfaces – and seek this ideal in every study. Participation by the sonographer in performance of measurements enhances recognition of the requirements for accurate quantitative echocardiography. Regular machine calibration is a prerequisite to accurate quantitative echocardiography. 2) Considerable effort must be made to standardize the position of each acoustic window and angulation from which the patient is imaged – with deviation from these norms being recorded for future reference. If at all possible, measurements should be taken at end expiration. If that is not possible, measurement of several consecutive beats will limit the impact of respiratory variation. 3) A uniform convention of measurement should be adopted. The best candidates for M-mode measurements are the American Society of Echocardiography recommendations for general measurement and the Penn convention for calculation of M-mode left ventricular mass. Further data is needed to determine which approaches to two-dimensional measurements best combine accuracy and reproducibility. 4) Interpretation of echocardiograms may be made most reproducible by measuring pertinent parameters from multiple beats and using the mean as the result and by having at least two readers interpret each echocardiogram, possibly with two separate readings by each reader.