Fraser R G, Breatnach E, Barnes G T
Radiology. 1983 Jul;148(1):1-5. doi: 10.1148/radiology.148.1.6856816.
A prototype digital unit dedicated to chest radiography was used to examine 50 selected patients for a comparison study of the capability of digital images and conventional chest radiographs to reveal normal anatomic structures and a variety of pathologic states. The images in both modes were submitted for interpretation to seven experienced radiologists and a standardized questionnaire completed for each. Visibility of seven anatomic structures in the mediastinum was consistently better on the digital images than on the conventional radiographs. With minor exceptions, pathologic states were equally well seen in the two systems. Despite the less familiar viewing format of the digital images, the mean confidence levels achieved were higher than for those on the conventional radiographs; this difference was statistically significant both for normal anatomic structures (p = 0.001) and pathologic states (p = 0.01). The advantages and disadvantages of the digital technique are discussed.
使用一台专门用于胸部X光摄影的数字样机对50名选定患者进行检查，以比较数字图像和传统胸部X光片显示正常解剖结构及各种病理状态的能力。两种模式下的图像都交给七名经验丰富的放射科医生进行解读，并为每位医生填写一份标准化问卷。纵隔内七个解剖结构在数字图像上的显示始终优于传统X光片。除了一些小的例外，两种系统对病理状态的显示效果相当。尽管数字图像的观看形式不太熟悉，但所达到的平均置信水平高于传统X光片；这种差异在正常解剖结构（p = 0.001）和病理状态（p = 0.01）方面均具有统计学意义。文中讨论了数字技术的优缺点。
