Can order of report prevent satisfaction of search in abdominal contrast studies?
Can order of report prevent satisfaction of search in abdominal contrast studies?
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DOI：
10.1016/j.acra.2004.11.007
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发表时间：
2005-01-01
影响因子：
4.8
通讯作者：
Lu, CH
中科院分区：
文献类型：
--
作者：
Berbaum, KS;Franken, EA;Lu, CH
理由和目标。先前的受试者工作特征（ROC）研究表明，在对比检查而不是平片上检测平片异常的决策阈值存在系统性偏移。先前的眼位研究表明，这种变化是基于对比度研究中对普通胶片区域的相对视觉忽略。我们现在确定是否干预，改变视觉搜索可以减少这种搜索为基础的搜索效果的对比研究腹部的满意度。作者在44例平片和造影检查的患者中测量了23个平片异常的检出率。在2个实验中，在不同的阶段独立检查每个平片和对比研究，观察员为每个解释提供异常的置信度。第一个实验中有13名观察员，第二个实验中有10名观察员。干预要求，对于造影研究，观察者在报告造影结果之前，首先报告X线片非造影区域的异常。通过使用适当的ROC模型估计每个观察者在每个治疗条件下的ROC曲线面积。分析的重点是治疗条件之间的决策阈值的变化。在腹部对比研究中，SOS对决策阈值的影响被复制。尽管减少了，但当观察者被要求在造影发现之前报告这些异常时，在造影检查中检测平片异常的决策阈值的变化仍然存在。在报告对比度异常之前报告平片异常，会降低对比度检查中视觉忽略非对比度区域所产生的决策阈值搜索效果的满意度。这表明，直接视觉搜索的干预措施并不能防止基于错误视觉搜索的搜索效果的满足。
Rationale and Objective. A previous receiver operating characteristic (ROC) study showed a systematic shift in decision thresholds for detecting plain film abnormalities on contrast examinations rather than plain radiographs. A previous eye-position study showed that this shift was based on a relative visual neglect of plain film regions on the contrast studies. We now determine whether an intervention that changes visual search can reduce this search-based satisfaction of search effect in contrast studies of the abdomen.Materials and Methods. The authors measured detection of 23 plain film abnormalities in 44 patients who had plain film and contrast examinations. In 2 experiments, each plain-film and contrast study was examined independently in different sessions with observers providing a confidence rating of abnormality for each interpretation. There were 13 observers in the first experiment and 10 in the second experiment. The intervention required that for the contrast studies, observers first report abnormalities in the noncontrast region of the radiograph before reporting contrast findings. ROC curve areas for each observer in each treatment condition were estimated by using a proper ROC model. The analysis focused on changes in decision thresholds among the treatment conditions.Results. The SOS effect on decision thresholds in abdominal contrast studies was replicated. Although reduced, the shift in decision thresholds in detecting plain film abnormalities on contrast examinations remained when observers were required to report those abnormalities before contrast findings.Conclusion. Reporting plain film abnormalities before reporting abnormalities demonstrated by contrast reduced somewhat the satisfaction of search effect on decision thresholds produced by a visual neglect of noncontrast regions on contrast examinations. This suggests that interventions that direct visual search do not offer protection against satisfaction of search effects that are based on faulty visual search.