Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, #50, Ilwon-dong, Kangnam-ku, Seoul 135-710, Republic of Korea.
Eur J Radiol. 2010 Apr;74(1):275-9. doi: 10.1016/j.ejrad.2009.02.009. Epub 2009 Mar 21.
To compare observer performance with a flat-panel liquid crystal display (LCD) monitor and with a high-resolution gray-scale cathode ray tube (CRT) monitor in the detection of interstitial lung markings using a silicon flat-panel-detector direct radiography (DR) and storage phosphor computed radiography (CR) in a clinical setting.
We displayed 39 sets of posteroanterior chest radiographs from the patients who were suspected of interstitial lung disease. Each sets consisted of DR, CR and thin-section CT as the reference standard. Image identities were masked, randomly sorted, and displayed on both five mega pixel (2048x2560x8 bits) LCD and CRT monitors. Ten radiologists independently rated their confidence in detection for the presence of linear opacities in the four fields of the lungs; right upper, left upper, right lower, and left lower quadrant. Performance of a total 6240 (39 setsx2 detector systemsx2 monitor systemx4 fieldsx10 observers) observations was analyzed by multi-reader multi-case receiver operating characteristic (ROC) analysis. Differences between monitor systems in combinations of detector systems were compared using ANOVA and paired-samples t-test.
Area under curves (AUC) for the presence of linear opacities measured by ROC analysis was higher on the LCDs than CRTs without statistical significance (p=0.082). AUC was significantly higher on the DR systems than CR systems (p=0.006). AUC was significantly higher on the LCDs than CRTs for DR systems (p=0.039) but not different for CR systems (p=0.301).
In clinical conditions, performance of the LCD monitor appears to be better for detecting interstitial lung markings when interfaced with DR systems.
在临床环境中，比较使用硅平板探测器直接数字化摄影（DR）和存储磷光体计算机放射摄影（CR），通过平板液晶显示器（LCD）和高分辨率灰度阴极射线管（CRT）显示器检测肺间质线样结构的观察者性能。
我们显示了 39 套来自疑似间质性肺病患者的后前位胸部 X 线片。每套由 DR、CR 和薄层 CT 作为参考标准组成。图像身份被屏蔽、随机排序，并在 500 万像素（2048x2560x8 位）LCD 和 CRT 显示器上显示。10 名放射科医生独立评估他们对四个肺区（右上、左上、右下和左下象限）线性混浊存在的检测信心。通过多读者多病例接收器工作特征（ROC）分析对总共 6240 次（39 套x2 个探测器系统 x2 个监视器系统 x4 个视野 x10 名观察者）观察的性能进行分析。使用方差分析和配对样本 t 检验比较探测器系统组合中监视器系统之间的差异。
通过 ROC 分析测量的线性混浊存在的曲线下面积（AUC）在 LCD 上高于 CRT，但无统计学意义（p=0.082）。DR 系统的 AUC 明显高于 CR 系统（p=0.006）。DR 系统的 LCD 的 AUC 明显高于 CRT（p=0.039），而 CR 系统的 AUC 则无差异（p=0.301）。
在临床条件下，当与 DR 系统接口时，LCD 监视器在检测肺间质线样结构方面的性能似乎更好。
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