Kido S, Ikezoe J, Takeuchi N, Kondoh H, Tomiyama N, Jokoh T, Kohno N, Takashima S, Yamagami H, Naito H
Department of Radiology, Osaka University Medical School, Japan.
Radiology. 1993 May;187(2):527-33. doi: 10.1148/radiology.187.2.8475302.
To evaluate the reliability of storage phosphor radiography (SR) in diagnosis of subtle interstitial lung abnormalities, the differences among radiologists in interpreting conventional screen-film radiographs and full-size and minified SR images obtained in 80 patients were studied. Forty patients had subtle interstitial lung abnormalities and 40 had no lung abnormalities. Seven chest radiologists and seven residents evaluated the images by using a five-point presence of abnormality scale. Results were evaluated with receiver operating characteristic technique. For all observers, no significant differences were observed among the three image types. For the chest radiologists, significant differences were observed between conventional radiographs and the two SR formats (P < .01). Furthermore, perceptual accuracy was best with conventional radiographs evaluated by chest radiologists. Overall performance with SR and conventional radiography was identical for diagnosis of abnormalities, but detection performance was significantly dependent on observer experience (P < .01 for chest radiologists and P > .01 for residents). For chest radiologists, critically important information may be lost with commercially available SR.
为评估存储磷光体X线摄影术（SR）在诊断细微间质性肺异常中的可靠性，研究了80例患者的传统屏-片X线照片以及全尺寸和缩小尺寸SR图像在放射科医生解读上的差异。40例患者有细微间质性肺异常，40例无肺部异常。7名胸部放射科医生和7名住院医生使用五点异常存在量表对图像进行评估。结果采用受试者操作特征技术进行评估。对于所有观察者，三种图像类型之间未观察到显著差异。对于胸部放射科医生，传统X线照片与两种SR格式之间观察到显著差异（P <.01）。此外，胸部放射科医生评估的传统X线照片的感知准确性最佳。SR和传统X线摄影在异常诊断方面的总体表现相同，但检测性能显著取决于观察者经验（胸部放射科医生P <.01，住院医生P >.01）。对于胸部放射科医生而言，市售SR可能会丢失至关重要的信息。
