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Digital replication of chest radiographs without altering diagnostic observer performance

机译：胸部X线片的数字复制而不改变诊断观察者性能

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A study to test the ability of a high-fidelity system to digitize chest radiographs, store the data in a computer, and reprint the film without altering diagnostic observer performance is reported. Two hundred and fifty-two (252) chest films with subtle image features indicative of interstitial disease, pulmonary nodule, or pneumothorax, along with 36 normal chest films were used in the study. Films were selected from a key word search on a computerized report archive and were graded by two experienced radiologists. Each film was digitized with 86 micron pixels and stored in 4000 $MUL 5000 arrays using a research instrument. Replicates were printed using a commercial laser film printer (Eastman Kodak Company) having 80 micron pixels. Originals and replicates were observed separately by two different experienced radiologists. Each indicated a graded response for the three possible pathologies. The agreement of observers between responses for replicates and originals was described by the kappa statistic and compared to the agreement when rereading the original film. The final result of this study supports a hypothesis that the replicate is indistinguishable from the original.
机译：一项研究以测试高保真系统的数字化胸片的能力，将数据存储在计算机中，然后重新打印膜，而不改变诊断观察者性能报告。二百52（252）胸片与微妙的图像特征指示间质性疾病，肺结节或气胸，36层正常胸膜在该研究中使用沿。从与计算机有关的报告保存一个关键字搜索选择电影和两个高年资医师进行分级。每个膜用86个微米的像素数字化，并且使用仪器研究存储在$ 4000个MUL 5000阵列。重复使用具有80个微米像素的商用激光胶片打印机（Eastman Kodak公司）打印。原件和复制由两个不同的有经验的放射科医师分别观察到。每个所指示的三个可能的病理学分级响应。用于重复和原稿响应之间观察员的协议是由kappa统计描述，并与重读原始膜时的协议。这项研究的最终结果支持一种假设认为复制是从原来的没有区别。

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