Christensen E E, Murry R C, Holland K, Reynolds J, Landay M J, Moore J G
Radiology. 1981 Feb;138(2):361-5. doi: 10.1148/radiology.138.2.7455116.
A group of 100 carefully selected chest radiographs was read by ten observers, five experienced and five inexperienced. The radiographs were chosen to present the readers with a disproportionately large number of both subtle abnormalities and nonpulmonary lesions. Each reader was allowed to search the radiographs for as long as appropriate, up to a maximum of four minutes. The length of time taken for each observation was recorded to the nearest second. The time-perception data were plotted on both linear and semilogarithmic graphs. The results showed that experienced readers concluded their visual search while positive detection rate was higher than the rate for false-positives. For lesions in the central phasic, with both a rapid and a slow component of perception. If these data are plotted on a semilogarithmic scale, each of the two components plots as a straight line. For lesions in the periphery of the radiograph (chest wall and upper abdomen), the time-perception curve is monophasic, showing only a slow component.
一组精心挑选的100张胸部X光片由10位观察者阅读，其中5位经验丰富，5位经验不足。选择这些X光片是为了给读者呈现数量极多的细微异常和非肺部病变。每位读者可根据自身情况对X光片进行尽可能长时间的查看，最长为4分钟。每次观察所用时间精确记录到秒。时间感知数据绘制在线性图和半对数图上。结果显示，经验丰富的读者在阳性检出率高于假阳性率时结束视觉搜索。对于中央阶段的病变，感知有快速和缓慢两个成分。如果将这些数据绘制在半对数尺度上，两个成分中的每一个都绘成一条直线。对于X光片边缘（胸壁和上腹部）的病变，时间感知曲线是单相的，仅显示缓慢成分。
