EFFECTS OF IMAGE BRIGHTNESS AND RESOLUTION ON DIAGNOSIS

为了定义显示，已经进行了许多研究 放射学初步诊断的要求。 这些研究大多 解决软显示器或不同图像的分辨率要求， 可以提高观察者性能的处理选项。 结果 这些研究表明，当初步诊断是在软 显示器，读取器性能低于在胶片上执行时， 检测包含高频信息的成像特征。 仅提及和/或处理了显示器亮度的问题 然而，在这些研究中， 分辨率和显示亮度对观察者表现的影响还没有被 充分检查。 根据我们自己的数据和类似的 在其他机构的努力，我们建议调查的影响， 显示器亮度对阅读器检测特定 以及通常是细微的异常，并评估 亮度和分辨率在一个全面的，多观察者，多， 异常ROC研究。 我们研究设计中的具体模式和 我们将研究的异常类型应使我们能够部分定义 主要感兴趣区域的“亮度细节”要求 电子成像，因为它涉及投影射线照相术， 临床环境

A number of studies have been performed in an attempt to define display requirements for primary diagnosis in radiology. Most of these studies address resolution requirements for soft displays or different image- processing options which may improve observer performance. The results of these studies show that when primary diagnosis is performed on soft display, reader performance is lower than when performed on film for the detection of imaging features which contain high-frequency information. The issue of display luminance has only been mentioned and/or dealt with in a cursory way in these studies, however, and the combined effects of resolution and display luminance on observer performance has not been adequately examined. Based on our own data and those from similar efforts at other institutions, we propose to investigate the effect of display luminance on readers' performance for the detection of specific and often subtle abnormalities and to assess the combined effect of luminance and resolution in a comprehensive, multi-observer, multi- abnormality ROC study. The specific modes in our study design and the type of abnormalities we will study should enable us to partially define "brightness detail" requirements for the region of primary interest in electronic imaging as it relates to projection radiography in the clinical environment.