RATIONALE AND OBJECTIVES:A previous study demonstrated unexpected protection from satisfaction of search (SOS) effects when observers verbalized the focus of their attention during visual search and interpretation of chest radiographs. We suggested that protection from SOS might have occurred if each observer developed an informal checklist to help generate the verbal descriptions. The objective of this study is to determine whether a formal checklist reduces SOS effects in chest radiology. MATERIALS AND METHODS:Fifty-seven chest radiographs, half of which demonstrated diverse, native abnormalities were read twice by 20 observers, once with and once without the addition of a simulated pulmonary nodule. Area under the receiver operating characteristic (ROC) curve for detecting the native abnormalities was estimated for each observer in each treatment condition using the contaminated binormal ROC model. Radiologists in the current experiment used a checklist during the interpretation, rather than describing their visual search. Results were compared with those of the verbalization study, which used the same set of radiographs. RESULTS:Although no SOS effect was found when the checklist was used, ROC performance was, on average, much poorer with the checklist than when ongoing search was reported verbally (0.68 versus 0.75, F(1, 37) = 17.26, P < .001). CONCLUSIONS:Our results indicate that the recommendation to use a self-prompting checklist to counteract SOS is not warranted. The relative superiority of verbalizing search over using an imposed checklist may be based on the consistency of each of these interventions with the observer's internal strategy for searching radiographs.

译文

理由和目的:先前的一项研究表明,当观察者在进行胸部X线片的视觉搜索和解释时,将他们的注意力集中在口头上时,其出人意料的保护作用就是免受搜索满意度(SOS)的影响。我们建议,如果每个观察者都制定一份非正式的清单来帮助生成口头描述,则可能会免受SOS的侵害。这项研究的目的是确定正式的检查清单是否能减少胸部放射学中的SOS效应。
材料与方法:57例胸部X线照片中,有20名观察者阅读了两次,其中一半表现出各种自然异常,一次伴有或不伴有模拟性肺结节。使用污染的双正态ROC模型,为每个观察者估计了每种治疗条件下用于检测自然异常的接收器工作特征(ROC)曲线下的面积。当前实验中的放射科医生在解释过程中使用了清单,而不是描述其视觉搜索。将结果与口头化研究的结果进行了比较,后者使用了相同的射线照片。
结果:尽管使用清单时未发现SOS效果,但平均而言,清单中的ROC性能要比口头报告正在进行的搜索时差得多(0.68对0.75,F(1,37)= 17.26,P <。 001)。
结论:我们的结果表明,不建议使用自动提示清单来抵消SOS。言语化搜索相对于使用强制检查表的相对优势可能基于这些干预措施中的每一项与观察者用于搜索射线照片的内部策略的一致性。

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