Evaluation of phantom image quality is an integral component of the quality assurance of SPECT systems. This evaluation often is done by visual assessment of the resolution of known structures of a specified size, such as arrays of cold rods in a warm background. Although this method is rapid and convenient, it is qualitative and is subject to inter- and intraobserver variability. Thus an automated quantitative analysis would be preferable. Several metrics of cold rod visibility have been developed, although their suitability for SPECT quality assurance depends on how well they correspond to visual scoring by experienced observers.

中文翻译：

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SPECT幻影冷棒能见度自动评分的比较与验证

体模图像质量评估是 SPECT 系统质量保证的一个组成部分。这种评估通常是通过视觉评估特定尺寸的已知结构的分辨率来完成的，例如温暖背景中的冷棒阵列。虽然这种方法快速方便，但它是定性的，并且受观察者间和观察者内的变异性影响。因此，自动定量分析将是优选的。已经开发了几种冷棒可见度指标，尽管它们对 SPECT 质量保证的适用性取决于它们与经验丰富的观察者的视觉评分的对应程度。