Berbaum K S, Franken E A, Dorfman D D, Miller E M, Caldwell R T, Kuehn D M, Berbaum M L
Department of Radiology, University of Iowa Hospitals and Clinics, Iowa City 52242-1077, USA.
Acad Radiol. 1998 Jan;5(1):9-19. doi: 10.1016/s1076-6332(98)80006-8.
The authors tested the hypothesis that satisfaction of search effect, which is associated with the failure to detect native chest abnormalities in the presence of simulated nodules, is caused by reduced gaze on the native abnormalities.
Gaze dwell time of 20 radiologists was recorded for the region around abnormalities on images. Ten radiographs were reviewed, nine of which contained native abnormalities. Each image was seen with and without a simulated nodule.
The decrease in the rate of true-positive findings in the detection of native abnormalities on images that contained simulated nodules confirmed the occurrence of a satisfaction of search effect. Gaze times on native abnormalities (up to the time of report of the abnormalities) were the same for images with nodules in which native abnormalities were missed (gaze time, 9.4 seconds) as they were for images without nodules in which native abnormalities were detected (gaze time, 9.5 seconds). Gaze time on missed native abnormalities was not affected by the presence (7.80 seconds) or absence (7.45 seconds) of nodules.
Reduction in gaze dwell time on the missed abnormalities is not the cause of satisfaction of search errors in chest radiographs.
作者检验了以下假设，即在存在模拟结节的情况下未能检测到胸部原有异常所导致的搜索效应满足感，是由于对原有异常的注视减少所致。
记录了20名放射科医生对图像上异常区域的注视停留时间。共审查了10张X光片，其中9张包含原有异常。每张图像分别在有和没有模拟结节的情况下查看。
在包含模拟结节的图像上检测原有异常时，真阳性发现率的降低证实了搜索效应满足感的发生。对于未检测到原有异常的有结节图像（注视时间为9.4秒）和检测到原有异常的无结节图像（注视时间为9.5秒），在报告异常之前对原有异常的注视时间相同。未检测到的原有异常的注视时间不受结节存在（7.80秒）或不存在（7.45秒）的影响。
对未检测到的异常的注视停留时间减少不是胸部X光片搜索错误满足感的原因。
