Personal computer versus workstation display: Observer performance in detection of wrist fractures on digital radiographs
Personal computer versus workstation display: Observer performance in detection of wrist fractures on digital radiographs
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DOI：
10.1148/radiol.2373041439
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发表时间：
2005-12-01
期刊：
影响因子：
19.7
通讯作者：
Anderson, GD
中科院分区：
文献类型：
--
作者：
Doyle, AJ;Le Fevre, J;Anderson, GD
目的：回顾性比较个人计算机（PC）与专用图像存档和通信系统（PACS）工作站显示在计算机X光片上手腕骨折检测中观察者表现的准确性。 材料和方法：本研究根据世界医学会赫尔辛基宣言（2002年版）的原则进行。机构临床委员会批准了该研究；不需要知情同意。七名观察员独立评估了 259 名受试者的手腕随机匿名数字 X 光照片；骨折 146 例，健康对照组 113 例（男性 151 例，女性 108 例；平均年龄 33 岁）。随访X光片和/或计算机断层扫描用作骨折患者的参考标准，随访X光片和/或临床病史数据用作对照的参考标准。该 PC 是一台标准的医院机器，配有 17 英寸（43 厘米）彩色显示器，并使用 Web 浏览器显示软件。 PACS 工作站有两个纵向 21 英寸（53 厘米）单色显示器，可显示 2300 条线。观察者按照 1（无骨折）至 5（明确骨折）的等级对 X 光片进行评分。比较受试者工作特征 (ROC) 曲线、灵敏度、特异性和准确性。结果：PC 和工作站的 ROC 曲线下面积几乎相同（分别为 0.910 与 0.918；差异，0.008；95% 置信区间：-0.029、0.013）。 PC 的平均灵敏度与工作站的平均灵敏度几乎相同（分别为 85% 和 84%），平均特异性也一样（分别为 82% 和 81%）。两者的平均准确度 (83%) 相同。 结论：本研究结果表明，与使用 PACS 工作站相比，使用 PC 检测腕部骨折的观察者表现的准确度没有差异。 (c) 北美放射学会，2005 年。
PURPOSE: To retrospectively compare the accuracy of observer performance with personal computer (PC) compared with that with dedicated picture archiving and communication system (PACS) workstation display in the detection of wrist fractures on computed radiographs.MATERIALS AND METHODS: This study was conducted according to the principles of the Declaration of Helsinki (2002 version) of the World Medical Association. The institutional clinical board approved the study; informed consent was not required. Seven observers independently assessed randomized anonymous digital radiographs of the wrist from 259 subjects; 146 had fractures, and 113 were healthy control subjects (151 male and 108 female subjects; average age, 33 years). Follow-up radiographs and/or computed tomographic scans were used as the reference standard for patients with fractures, and follow-up radiographs and/or clinical history data were used as the reference standard for controls. The PC was a standard hospital machine with a 17-inch (43-cm) color monitor with which Web browser display software was used. The PACS workstation had two portrait 21-inch (53-cm) monochrome monitors that displayed 2300 lines. The observers assigned scores to the radiographs on a scale of 1 (no fracture) to 5 (definite fracture). Receiver operating characteristic (ROC) curves, sensitivity, specificity, and accuracy were compared.RESULTS: The areas under the ROC curves were almost identical for the PC and workstation (0.910 vs 0.918, respectively; difference, 0.008; 95% confidence interval: -0.029, 0.013). The average sensitivity with the PC was almost identical to that with the workstation (85% vs 84%, respectively), as was the average specificity (82% vs 81%, respectively). The average accuracy (83%) was the same for both.CONCLUSION: The results of this study showed that there was no difference in accuracy of observer performance for detection of wrist fractures with a PC compared with that with a PACS workstation. (c) RSNA, 2005.