Department of Clinical Radiology, Munich University Hospital, Nussbaumstrasse 20, Munich 80336, Germany.
AJR Am J Roentgenol. 2011 Sep;197(3):W399-404. doi: 10.2214/AJR.10.5716.
The purpose of this study was to evaluate the impact of the use of 64-MDCT and volume image reading on the radiologic workflow during a mass casualty incident simulation.
For this simulation, casualties were taken to our level I trauma center, and triage was done with whole-body 64-MDCT. The complete raw dataset of thin-section images was sent to a dedicated 3D workstation for further interpretation and simultaneous reformations. This new reading method is called volume image reading. Several time frames were documented to evaluate the workflow: examination time, time needed for image processing, and mean image transfer rates. The results were compared with those of a previous study using a 4-MDCT with axial images only and transfer of data to a PACS.
The time for complete image processing (acquisition, reconstruction, and transfer) for 64-MDCT was 4.1 minutes (range, 3.9-4.3 minutes) compared with 9.0 minutes (range, 6.4-10.2 minutes) for 4-MDCT (p ≤ 0.001). The image processing capacity was 14.8 examinations/h for 64-MDCT compared with 6.7 examinations/h for 4-MDCT. The mean number of images was 953 for 64-MDCT compared with 202 for 4-MDCT (p ≤ 0.001). There were no significant differences between 64- and 4-MDCT for the time needed to prepare patients.
The use of 64-MDCT with volume image reading led to evident advantages in the radiologic trauma workflow compared with 4-MDCT. Reading of the full image set including reformations can be initiated earlier with volume image reading.
本研究旨在评估在大规模突发事件模拟中使用 64 层 MDCT 和容积图像阅读对放射工作流程的影响。
在此次模拟中，伤员被送往我们的一级创伤中心，使用全身 64 层 MDCT 进行分诊。薄层图像的完整原始数据集被发送到专用的 3D 工作站进行进一步解读和同时进行重建。这种新的阅读方法称为容积图像阅读。记录了几个时间框架来评估工作流程：检查时间、图像处理所需时间和平均图像传输率。将结果与之前使用仅轴向图像的 4-MDCT 和将数据传输到 PACS 的研究进行比较。
与仅轴向图像的 4-MDCT 相比，64-MDCT 完成完整图像处理（采集、重建和传输）的时间为 4.1 分钟（范围，3.9-4.3 分钟），而 4-MDCT 的时间为 9.0 分钟（范围，6.4-10.2 分钟）（p ≤ 0.001）。64-MDCT 的图像处理能力为 14.8 次/小时，而 4-MDCT 为 6.7 次/小时。64-MDCT 的平均图像数量为 953 张，而 4-MDCT 为 202 张（p ≤ 0.001）。在准备患者方面，64-MDCT 和 4-MDCT 之间没有显著差异。
与 4-MDCT 相比，使用 64-MDCT 和容积图像阅读在放射创伤工作流程中具有明显优势。容积图像阅读可以更早地开始读取包括重建在内的完整图像集。
