Krupinski Elizabeth A, Schartz Kevin M, Van Tassell Mark S, Madsen Mark T, Caldwell Robert T, Berbaum Kevin S
Emory University, Department of Radiology and Imaging Sciences, Atlanta, Georgia, United States.
University of Iowa, Roy J. and Lucille A. Carver College of Medicine, Department of Radiology, Iowa City, Iowa, United States.
J Med Imaging (Bellingham). 2017 Jul;4(3):035504. doi: 10.1117/1.JMI.4.3.035504. Epub 2017 Sep 29.
Our goal was to ascertain how fatigue affects performance in reading computed tomography (CT) examinations of patients with multiple injuries. CT images with multiple fractures from a previous study of satisfaction of search (SOS) were read by radiologists after a day of clinical work. Performance in this study with fatigued readers was compared to a previous study in which readers were not fatigued. Detection accuracy for obvious injuries was not affected by fatigue, but accuracy for subtle fractures was reduced ([Formula: see text]). An SOS effect on decision thresholds was evident mirroring recent studies. Without fatigue, readers spent more time interpreting and reporting findings as the number of the injuries increased. When fatigued, readers did not increase reading time as fracture number increased. Without fractures, reading time for not-fatigued and fatigued readers was the same ([Formula: see text]) but was significant ([Formula: see text]) with an added subtle fracture. The difference increased with a major injury ([Formula: see text]) and increased further with both a major injury and subtle fracture ([Formula: see text]). Fatigue and multiple abnormalities have independent effects on detection performance but do interact in determining search time.
我们的目标是确定疲劳如何影响对多发伤患者进行计算机断层扫描（CT）检查时的阅片表现。在一天的临床工作之后，放射科医生阅读了来自先前一项搜索满意度（SOS）研究的含有多处骨折的CT图像。将本研究中疲劳阅片者的表现与先前一项阅片者未疲劳的研究进行了比较。明显损伤的检测准确性不受疲劳影响，但细微骨折的准确性降低了（[公式：见原文]）。SOS对决策阈值的影响很明显，这与最近的研究结果一致。在没有疲劳的情况下，随着损伤数量的增加，阅片者会花费更多时间来解读和报告检查结果。当疲劳时，阅片者不会随着骨折数量的增加而增加阅片时间。在没有骨折的情况下，未疲劳和疲劳阅片者的阅片时间相同（[公式：见原文]），但当增加一处细微骨折时，阅片时间有显著差异（[公式：见原文]）。随着一处重伤的出现，差异增大（[公式：见原文]），当既有一处重伤又有细微骨折时，差异进一步增大（[公式：见原文]）。疲劳和多种异常情况对检测表现有独立影响，但在确定搜索时间方面确实存在相互作用。
