Image quality assessment of digital intraoral radiography-perception to caries diagnosis
Image quality assessment of digital intraoral radiography-perception to caries diagnosis
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数字口腔内X线摄影的图像质量评估——对龋齿诊断的感知
DOI：
10.1016/j.jdsr.2011.09.001
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Yoshiura K.
中科院分区：
文献类型：
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作者：
Fujita-Yoshigaki J;Narita T;Sugiya H;Yoshiura K.
放射诊断过程由三个主要阶段组成，即心理物理学、心理学和疾病学。心理物理学阶段图像质量的明显改善并不一定意味着诊断性能的提高。这对于一般的诊断过程可能是正确的，但对于龋齿诊断可能不是，因为在这种特殊的和相对简单的任务中，心理物理阶段是最重要的。本文综述了感知觉与邻面龋诊断之间的关系，并介绍了感知觉曲线（PC）和受试者工作特征（ROC）曲线检验。PC测试被开发来代表射线照相成像系统的心理物理特性。由于物理特性被证明与心理物理特性密切相关，因此可以从它们的物理特性理论上计算射线照相系统的心理物理特性。以类似的方式，可以从射线照相系统的一些物理参数预测观察者在心理物理阶段的低对比度可检测性。在邻面龋诊断任务中，观察者的低对比度检测能力也与从ROC曲线获得的诊断性能相关。因此，相当高的心理物理特性和诊断准确性之间的相关性表明感知和邻面龋诊断之间的密切关系。这意味着物理图像质量的改善在一定程度上提高了邻面龋诊断的诊断性能。
The radiological diagnostic process is composed of the three major phases, psychophysical, psychological and nosological. An apparent improvement in image quality in the psychophysical phase does not necessarily imply an increased diagnostic performance. This may be true for the general diagnostic processes, but may not for the caries diagnosis, because psychophysical phase is of most significance in such special and relatively simplified task. In this article the processes to correlate perception to approximal caries diagnosis are reviewed using the Perceptibility Curve (PC) tests and Receiver Operating Characteristic (ROC) curve tests. The PC test was developed to represent the psychophysical property of the radiographic imaging system. Since physical properties are shown to be closely correlated with psychophysical properties, it is possible to theoretically calculate psychophysical properties of the radiographic systems from their physical properties. In a similar manner, observers’ low contrast detectability in the psychophysical phase can be predicted from some physical parameters of the radiographic system. Observers’ low contrast detectability is also correlated with the diagnostic performance obtained from ROC curve in the task of approximal caries diagnosis. Thus, considerably high correlation between psychophysical properties and diagnostic accuracy indicates close relationship between perception and approximal caries diagnosis. It implies that an improvement in the physical image quality leads to increased diagnostic performance to some extent in the approximal caries diagnosis.