Display of CT studies on a two-screen electronic workstation versus a film panel alternator: sensitivity and efficiency among radiologists.
Display of CT studies on a two-screen electronic workstation versus a film panel alternator: sensitivity and efficiency among radiologists.
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在双屏电子工作站与薄膜面板交流发电机上显示 CT 研究：放射科医生的灵敏度和效率。
作者：
W D Foley;D R Jacobson;A J Taylor;L R Goodman;E T Stewart;J W Gurney;D. Stroka
正在开发连接计算机断层摄影（CT）和磁共振成像系统的网络中所包含的原型电子工作站。作者比较了从双屏工作站（1，000线监视器和图像存储器中的12位动态范围）和传统胶片面板交流发电机阅读身体CT研究的观察者效率和灵敏度。双屏工作站以256 x 256的矩阵分辨率显示32幅图像，或以512 x 512的矩阵分辨率同时显示8幅图像。96个矩阵分辨率为512 x 512的图像可以同时显示在胶片面板交流发电机上。4名观察员随机阅读20例病例的图像，其中10例重复检查。平均每例有32个图像。使用胶片面板交流发电机的报告时间（平均5.08分钟）少于使用工作站的报告时间（平均6.66分钟）。所有观察者从薄膜面板交流发电机上阅读的灵敏度均有所提高（范围，1%-12%）（P <0.05）。在通过身体CT评估的复杂病例中，目前的原型双屏电子工作站受到显示能力的限制。
Prototype electronic workstations incorporated in networks linking computed tomographic (CT) and magnetic resonance imaging systems are being developed. The authors compared observer efficiency and sensitivity in reading body CT studies from a two-screen workstation (1,000-line monitors and 12-bit dynamic range in image memory) and conventional film panel alternator. The two-screen workstation displayed 32 images at a matrix resolution of 256 x 256 or eight images at a matrix resolution of 512 x 512 simultaneously. Ninety-six images with a matrix resolution of 512 x 512 could be displayed simultaneously at the film panel alternator. Four observers read images from 20 cases, 10 with repeat examinations, in a randomized viewing sequence. There was an average of 32 images per case. Reporting time was less with the film panel alternator (average, 5.08 minutes) than with the workstation (average, 6.66 minutes). There was improved sensitivity for all observers in reading from the film panel alternator (range, 1%-12%) (P less than .05). In complex cases evaluated by means of body CT, the current prototype two-screen electronic workstation is limited by display capabilities.