电子束CT检测心脏钙化：观察者间及观察者内评分量化的可靠性
Detection of heart calcification with electron beam CT: interobserver and intraobserver reliability for scoring quantification.
作者信息
Kaufmann R B, Sheedy P F, Breen J F, Kelzenberg J R, Kruger B L, Schwartz R S, Moll P P
机构信息
Department of Epidemiology, University of Michigan, Ann Arbor.
出版信息
Radiology. 1994 Feb;190(2):347-52. doi: 10.1148/radiology.190.2.8284380.
PURPOSE
To assess interobserver and intraobserver reliability of three quantitative measures of coronary artery calcium burden: calcium "score," number of calcified lesions, and calcified area.
MATERIALS AND METHODS
Electron beam computed tomographic (CT) scanning was used in a series of 25 patients to detect coronary artery calcification. Scan results were reviewed for quality by a radiologist, then scored by two radiologic technologists and by another radiologist.
RESULTS
Many interobserver and intraobserver disagreements were noted on a lesion-by-lesion basis. Since most disagreements involved very small lesions, however, their impact was negligible for all three measures of calcium burden.
CONCLUSION
It is not useful for more than one observer to independently score a single CT examination obtained to detect cardiac calcification, even when the arteries are heavily calcified.
目的
评估三位观察者之间以及同一观察者自身对冠状动脉钙化负荷的三种定量测量方法的可靠性：钙化“积分”、钙化病变数量和钙化面积。
材料与方法
对25例患者进行电子束计算机断层扫描（CT）以检测冠状动脉钙化。扫描结果由一名放射科医生检查质量，然后由两名放射技师和另一名放射科医生进行评分。
结果
在逐个病变的基础上发现了许多观察者间和观察者自身的分歧。然而，由于大多数分歧涉及非常小的病变，因此它们对所有三种钙化负荷测量方法的影响可以忽略不计。
结论
即使动脉严重钙化，让多名观察者独立对单次用于检测心脏钙化的CT检查进行评分也是没有意义的。
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