Beard D V, Hemminger B M, Denelsbeck K M, Johnston R E
Department of Radiology, University of North Carolina, Chapel Hill.
J Digit Imaging. 1994 May;7(2):69-76. doi: 10.1007/BF03168425.
A considerable number of prototype and commercial workstations have been developed during the last 10 years for electronic display of computed tomographic (CT) images during clinical interpretation. These CT workstations have varied widely in the number and size of monitors available for the display of the medical images ranging from a single 1,024 x 1,204-pixel monitor, to eight 2,500 x 2,000-pixel monitors. Image display times also have varied considerably, ranging from as fast as .11 seconds, to as slow as 26 seconds to fill a single monitor. No consensus has formed in the workstation community with regard to display area and response time requirements. To address this issue, we have constructed a time-motion model of CT interpretation. Model accuracy is experimentally verified with three workstations as well as with the film alternator. In general, CT interpretations with an electronic workstation become faster as display area increases and display time decreases. Results can be used by workstation designers and purchasers to roughly estimate differences in interpretation speeds among contending CT workstation designs.
在过去十年间，已经开发出了相当数量的原型和商用工作站，用于在临床解读过程中对计算机断层扫描（CT）图像进行电子显示。这些CT工作站在可供显示医学图像的显示器数量和尺寸方面差异很大，从单个1024×1204像素的显示器到八个2500×2000像素的显示器不等。图像显示时间也有很大差异，从最快的0.11秒到最慢的26秒才能填满单个显示器。在工作站领域，对于显示面积和响应时间要求尚未形成共识。为了解决这个问题，我们构建了一个CT解读的时间-动作模型。通过三个工作站以及胶片换片机对模型准确性进行了实验验证。一般来说，随着显示面积增加和显示时间减少，使用电子工作站进行CT解读会变得更快。工作站设计师和购买者可以利用这些结果来大致估计不同竞争CT工作站设计之间解读速度的差异。
