【摘要】 目的 比较常规胸片与螺旋CT在尘肺影像中的表现。方法 回顾性分析35例尘肺的胸片与螺旋CT的影像表现。结果 螺旋CT检查的35例中，有21例出现散在的2～9mm圆形小阴影，有10例出现>10mm的大阴影，有4例出现混合阴影(既有大阴影，又有小阴影)；有25例患者有不同程度的肺气肿，有28例显示胸膜病变，有11例分别患有新老肺结核灶，32例有不同程度的淋巴结肿大或钙化。结论 螺旋CT扫描速度快，无间断地采集数据，一次可获得较大范围的容积数据，为后期的图像重建提供保证，在检出尘肺的直接征象和间接征象上较常规胸片敏感，可以弥补X线平片的许多不足。有利于尘肺的正确诊断和鉴别诊断，特别有利于尘肺的早期诊断。

    【关键词】 尘肺；螺旋CT；放射摄影术；胸部；诊断

    Spiral CT manifestations of pneumoconiosis

    ZHANG Guo-fu.

    Department of Radiology,Xuchang Cental Hospital,Xuchang 461000,China

    【Abstract】 Objective To evaluate the diagnosing value through comparison between plain chest radiography and spiral computed tomography(CT)of pneumoconiosis.Methods Chest radiographic and spiral CT images were analyzed retrospectively in 35 cases of pneumoconiosis confirmed by clinic and radiography.Results In 21 cases scattered round nodules could be seen with a diameter of 2～9mm in CT and nodules over 10mm occurred in 10 cases.Other findings in CT were as follows:emphysema in 25 patients,tuberculosis in 11 patients,and lymph node enlargement or calcification in 32 cases.Conclusion Spiral CT is proved to be a relatively precise examination method in the detection of direct and indirect signs of pneumoconiosis,when combined with plain radiography can help radiologists to avoid misakes and achieve accurate diagnosis. ......