Krupinski Elizabeth A
Department of Radiology & Imaging Sciences, Emory University, 1364 Clifton Rd NE Room D107, Atlanta, GA, 30322, USA.
J Digit Imaging. 2017 Apr;30(2):144-147. doi: 10.1007/s10278-016-9917-6.
This study compared a single 8 MP vs. dual 5 MP displays for diagnostic accuracy, reading time, number of times the readers zoomed/panned images, and visual search. Six radiologists viewed 60 mammographic cases, once on each display. A sub-set of 15 cases was viewed in a secondary study using eye-tracking. For viewing time, there was significant difference (F = 13.901, p = 0.0002), with 8 MP taking less time (62.04 vs. 68.99 s). There was no significant difference (F = 0.254, p = 0.6145) in zoom/pan use (1.94 vs. 1.89). Total number of fixations was significantly (F = 4.073, p = 0.0466) lower with 8 MP (134.47 vs. 154.29). Number of times readers scanned between images was significantly fewer (F = 10.305, p = 0.0018) with 8 MP (6.83 vs. 8.22). Time to first fixate lesion did not differ (F = 0.126, p = 0.7240). It did not take any longer to detect the lesion as a function of the display configuration. Total time spent on lesion did not differ (F = 0.097, p = 0.7567) (8.59 vs. 8.39). Overall, the single 8 MP display yielded the same diagnostic accuracy as the dual 5 MP displays. The lower resolution did not appear to influence the readers' ability to detect and view the lesion details, as the eye-position study showed no differences in time to first fixate or total time on the lesions. Nor did the lower resolution result in significant differences in the amount of zooming and panning that the readers did while viewing the cases.
本研究比较了单台800万像素显示屏与双台500万像素显示屏在诊断准确性、阅片时间、阅片者缩放/平移图像的次数以及视觉搜索方面的差异。六位放射科医生查看了60例乳腺钼靶病例，每种显示屏各查看一次。在一项二次研究中，使用眼动追踪技术对15例病例的子集进行了查看。在阅片时间方面，存在显著差异（F = 13.901，p = 0.0002），800万像素显示屏用时更短（62.04秒对68.99秒）。在缩放/平移使用方面无显著差异（F = 0.254，p = 0.6145）（1.94次对1.89次）。800万像素显示屏的总注视次数显著更低（F = 4.073，p = 0.0466）（134.47次对154.29次）。阅片者在图像间扫描的次数，800万像素显示屏显著更少（F = 10.305，p = 0.0018）（6.83次对8.22次）。首次注视病变的时间无差异（F = 0.126，p = 0.7240）。作为显示屏配置的函数，检测病变并未花费更长时间。在病变上花费的总时间无差异（F = 0.097，p = 0.7567）（8.59秒对8.39秒）。总体而言，单台800万像素显示屏与双台500万像素显示屏的诊断准确性相同。较低分辨率似乎并未影响阅片者检测和查看病变细节的能力，因为眼位研究表明首次注视时间或在病变上的总时间并无差异。较低分辨率也未导致阅片者在查看病例时进行缩放和平移的量出现显著差异。
