Rose C P, Stolberg H O
Invest Radiol. 1982 Mar-Apr;17(2):139-44. doi: 10.1097/00004424-198203000-00004.
The determination of radiographic cardiac size as an estimation of the state of cardiac function is one of the more common correlations made. Despite the widespread use of these measurements, the correlation between cardiac function and radiographic appearance, and the validity of clinical judgments based on this correlation, has not been fully determined. Similarly, the increment in left ventricular chamber size necessary to produce a change in the plain film appearance of the left ventricle has not been defined. The results of a two observer, blind, retrospective analysis of plain film radiographs of the chest, and related quantitative left ventricular angiograms, and left ventricular pressure studies performed on 256 patients is presented. The sensitivity, speficity, predictive value and accuracy of six previously described plain film measurements of left ventricular size together with determinations of the extent of left ventricular volume change necessary to produce a perceptible change in the plain film radiographic appearance of the left ventricle are reported. The performance of each of these measurements proved to be disappointing. A sensitivity of 75% was not possible using any of the methods unless the left ventricular chamber volume was more than 66% above the upper limit of normal.
将X线片上心脏大小作为心功能状态的一种评估方法是较为常见的关联之一。尽管这些测量方法被广泛应用，但心功能与X线表现之间的关联以及基于这种关联的临床判断的有效性尚未完全确定。同样，导致左心室平片表现发生变化所需的左心室腔大小的增加量也尚未明确。本文展示了对256例患者的胸部平片、相关定量左心室血管造影以及左心室压力研究进行的双观察者、盲法、回顾性分析结果。报告了六种先前描述的左心室大小平片测量方法的敏感性、特异性、预测价值和准确性，以及产生左心室平片X线表现可察觉变化所需的左心室容积变化程度的测定结果。事实证明，这些测量方法的表现都不尽人意。除非左心室腔容积比正常上限高出66%以上，否则使用任何一种方法都不可能达到75%的敏感性。
