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对1205例确诊为矽肺的患者分别拍摄普通高仟伏(HkV)胸片和数字摄影(DR)对比分析诊断期别、小阴影形态、总体密集度,并观察不同kV、不同相机像素和窗位窗宽等投照条件对胸片尘肺病变、胸片黑白度、胸椎暴露程度的影响。所有诊断专家或不同诊断组对同一尘肺患者的DR胸片和HkV胸片诊断期别、小阴影形态、总体密集度的判定结果非常接近。用110 kV、120 kV所拍摄的DR胸片显示的肺纹理和病变边缘比用80 kV、90 kV拍摄的DR胸片要清晰;像素尺寸小、像素值越高的相机打印出的胸片其肺野外带肺纹理以及尘肺病变边缘更清晰、锐利,更利于观察。提示DR技术有利于提高胸片质量和尘肺病诊断准确率,建议尘肺的DR摄影以110~120 kV为宜,对相机的像素也应作出具体的要求。
A total of 1205 patients diagnosed as silicosis were examined by HkV chest radiography and digital radiography (DR) respectively. The diagnostic criteria, the shape of the small shadow and the overall intensity of the lesions were observed. The effects of different kV, different camera pixels and window level Window width and other lighting conditions on the chest pneumoconiosis, chest radiograph, the degree of thoracic exposure. All diagnostic experts or different diagnostic groups for the same pneumoconiosis patients with DR chest and HkV chest diagnostic phase, small shadow morphology, the overall intensity of the judgment results are very close. DR chest radiographs taken at 110 kV and 120 kV showed a better lung texture and lesion edge than the DR radiographs taken at 80 kV and 90 kV. The smaller the pixel size and the higher the pixel value, Lungs with lungs outside the lungs and the edge of lung lesions more clear, sharp, more conducive to observation. Tip DR technology is conducive to improve the quality of chest X-ray and pneumoconiosis diagnostic accuracy, it is recommended that the DR pneumoconiosis to 110 ~ 120 kV is appropriate, the camera pixels should also make specific requirements.