Hirota K, Ikuno Y, Nishikimi T, Kawarabayashi T, Murai K, Yasuda M, Oku H, Takeuchi K, Takeda T, Ochi H
J Cardiogr. 1986 Jun;16(2):319-29.
Factor analysis was applied to multigated cardiac pool scintigraphy to evaluate its ability to detect left ventricular wall motion abnormalities in 35 patients with old myocardial infarction (MI), and in 12 control cases with normal left ventriculography. All cases were also evaluated by conventional Fourier analysis. In most cases with normal left ventriculography, the ventricular and atrial factors were extracted by factor analysis. In cases with MI, the third factor was obtained in the left ventricle corresponding to wall motion abnormality. Each case was scored according to the coincidence of findings of ventriculography and those of factor analysis or Fourier analysis. Scores were recorded for three items; the existence, location, and degree of asynergy. In cases of MI, the detection rate of asynergy was 94% by factor analysis, 83% by Fourier analysis, and the agreement in respect to location was 71% and 66%, respectively. Factor analysis had higher scores than Fourier analysis, but this was not significant. The interobserver error of factor analysis was less than that of Fourier analysis. Factor analysis can display locations and dynamic motion curves of asynergy, and it is regarded as a useful method for detecting and evaluating left ventricular wall motion abnormalities.
因子分析应用于多门控心血池闪烁显像，以评估其在35例陈旧性心肌梗死（MI）患者及12例左心室造影正常的对照病例中检测左心室壁运动异常的能力。所有病例均采用传统傅里叶分析进行评估。在大多数左心室造影正常的病例中，因子分析可提取出心室和心房因子。在心肌梗死病例中，左心室中对应于壁运动异常的第三个因子被获得。根据心室造影结果与因子分析或傅里叶分析结果的一致性对每个病例进行评分。记录三项指标的评分：协同失调的存在、位置和程度。在心肌梗死病例中，因子分析对协同失调的检出率为94%，傅里叶分析为83%，在位置方面的一致性分别为71%和66%。因子分析的评分高于傅里叶分析，但差异无统计学意义。因子分析的观察者间误差小于傅里叶分析。因子分析能够显示协同失调的位置和动态运动曲线，被认为是检测和评估左心室壁运动异常的一种有用方法。
