Eyestrain in Radiologists

这项应用的广泛、长期的目标是确定动眼疲劳对 在读取数字显示的放射检查期间的诊断准确性。这将是 有三个具体目标：(1)测试疲劳是否会降低检测精度和视觉搜索 静态图像数据集的效率，(2)测试疲劳是否会降低检测精度和视觉搜索 动态图像数据集的效率，以及(3)发现在 放射科医生在日常实践中面临的各种情况。目前的放射学实践越来越依赖于 先进的成像技术。这不仅改善了接触专家的机会，产生了更多 在提高效率和生产率的同时，也大大增加了放射科医生的工作量。现在的放射科医生 解读更多的影像研究，每个研究包含更多的图像。口译工作量的增加 延长了他们观看数字显示的时间，这可能会对诊断产生不利影响 性能。广泛的人为因素工程学研究表明，长时间使用视觉 显示终端会导致动眼疲劳，进而降低性能。没有关于眼睛疲劳的研究 放射学是可用的，但初步研究表明，放射科医生报告的日益严重的 随着他们阅读更多的成像研究，他们会出现眼睛疲劳的症状，包括视力模糊和聚焦困难。 我们建议评估动眼疲劳的可测量参数，如调节、收敛、 和视觉搜索效率，并将它们与诊断解释性能相关联。诊断准确率 将使用接收器工作特性(ROC)方法进行分析。视觉搜索效率将是 通过测量眼跳长度、决策驻留和搜索模式类型进行研究。在这个项目的最后， 我们将了解动眼疲劳对诊断准确性和解释效率的影响。 只有通过更好地理解观察者错误的本质，我们才能发现有效的 减少误差的方法。

The broad, long-term objective of this application is to determine the impact of oculomotor fatigue on diagnostic accuracy during the reading of digitally displayed radiological examinations.This will be accomplished with three specific aims: (1) test whether fatigue reduces detection accuracy and visual search efficiency in static image datasets, (2) test whether fatigue reduces detection accuracy and visual search efficiency in dynamic image datasets, and (3) discover the levels of visual fatigue that are experienced in a variety of situations faced by radiologists in daily practice. Current radiology practice relies increasingly on advanced imaging technology. Not only has this improved access to sub-specialists, yielding greater efficiency and productivity, it has also increased the radiologists' workload significantly. Radiologists now interpret more imaging studies, each containing many more images. This increase in interpretation workload lengthens the time they must spend viewing digital displays and this may adversely affect diagnostic performance. Extensive human factors engineering research has demonstrated that prolonged use of visual display terminals yields oculomotor fatigue, which in turn reduces performance. No research on eyestrain in radiology is available, but a preliminary study demonstrates that radiologists report increasingly severe symptoms of eyestrain, including blurred vision and difficulty focusing, as they read more imaging studies. We propose to evaluate measurable parameters of oculomotor fatigue such as accommodation, vergence, and visual search efficiency and relate them to diagnostic interpretation performance. Diagnostic accuracy will be analyzed with receiver operating characteristic (ROC) methods. Visual search efficiency will be studied by measuring saccade length, decision dwell, and type of search pattern. At the end of this project, we will understand the influence of oculomotor fatigue on diagnostic accuracy and interpretation efficiency. Only by developing a better understanding of the nature of observer error, may we discover effective approaches to reducing the errors.