Department of Diagnostic Radiology, Unit 1273, The University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030-4009, USA.
J Digit Imaging. 2010 Apr;23(2):170-80. doi: 10.1007/s10278-009-9177-9. Epub 2009 Feb 13.
Digital screening mammograms (DM) take longer to interpret than film-screen screening mammograms (FSM). We evaluated what part of the process takes long in our reading environment. We selected cases from those for which timed readings had been performed as part of a previous study. Readers were timed as they performed various computer manipulations on groups of DM cases and as they moved the alternator and adjusted lighting and manual shutters for FSM cases. Subtracting manipulation time from the original interpretation times yielded estimated times to reach a decision. Manipulation times for DM ranged from a low of 11 s when four-view DM were simply opened and closed in a 4-on-1 hanging protocol before moving on to the next study to 113.8 s when each view of six-view DM were brought up 1-on-1, enlarged to 100% resolution, and panned through. Manipulation times for groups of FSM ranged from 8.3 to 12.1 s. Estimated decision-making times for DM ranged from 128.0 to 202.2 s, while estimated decision-making time for FSM ranged from 60.9 to 146.3 s. Computer manipulation time partially explains the discrepancy in interaction times between DM and FSM. Radiologists also appear to spend more time looking at DM than at FSM before making a decision.
数字筛查乳房 X 光摄影（DM）的解释时间长于胶片筛查乳房 X 光摄影（FSM）。我们评估了在我们的阅读环境中哪个过程需要很长时间。我们从之前一项研究中进行定时阅读的病例中选择了病例。当读者对 DM 病例组进行各种计算机操作，以及为 FSM 病例移动旋转器、调整灯光和手动快门时，他们会被计时。从原始解释时间中减去操作时间，得出到达决策的估计时间。DM 的操作时间从低至 11 秒，当四视图 DM 按照 4 对 1 悬挂协议简单打开和关闭，然后继续下一个研究时，到六视图 DM 的每个视图单独打开、放大到 100%分辨率并平移时的 113.8 秒不等。FSM 组的操作时间范围为 8.3 到 12.1 秒。DM 的估计决策时间范围从 128.0 到 202.2 秒，而 FSM 的估计决策时间范围从 60.9 到 146.3 秒。计算机操作时间部分解释了 DM 和 FSM 之间交互时间差异的原因。放射科医生在做出决策之前似乎也花更多的时间查看 DM 而不是 FSM。
