NON ROC STUDIES IN IMAGING SYSTEMS EVALUATIONS

现在在成像过程中进行的许多调查 系统的评估和比较包括解释（阅读） 由受试者评估的正常和异常病例研究 操作特性（ROC）或其衍生物。 ROC方法 (as及其衍生物）有许多限制，很少 当提出成像系统的评估时考虑。是 本研究的目的是探索替代方法， 将其结果与使用点测量ROC获得的结果进行比较 类似的评估方法。 不同的方法可以 可能被用来得出结论性的结果，或者，他们 可以用来定义感兴趣变量的范围， 使用ROC型研究进行进一步研究。为此，我们将 探索各种场景， 相似和/或不同。我们将探索的方法 是非提示和提示的主观评级，只是值得注意 差异（JND）和多点排序。

Many of the investigations that are now carried out during imaging systems' evaluations and comparisons include interpretation (reading) studies of normal and abnormal cases that are evaluated by receiver operating characteristics (ROC) or derivatives thereof. ROC methodology (as well as its derivatives) has many limitations that are rarely considered when imaging systems' evaluations are proposed. It is the purpose of this investigation to explore alternative methodologies and compare their results to those obtained using a point measurement ROC methodology for similar assessments. The different methodologies could potentially be used to derive conclusive results, or alternatively, they can be used to define the range of the variable of interest that should be further investigated using an ROC-type study. To do so, we will explore a variety of scenarios where the images produced by the systems are either similar and/or different. The methodologies we will explore are both non-prompted and prompted subjective ratings, Just Noticeable Differences (JND), and multi-point rank ordering.