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目的 回顾分析 2 8例支气管哮喘病人的肺HRCT表现 ,并与胸部平片比较。方法 2 8例临床诊断的支气管哮喘患者 ,年龄 2 0～ 75岁 ,平均 37 5岁 ,男性 9例 ,女性 19例 ,所有病人均有X线平片和CT扫描 ,HRCT采用1～ 1 5mm层厚 ,高频率重建算法和吸气末扫描 ,另 7例加扫呼气末HRCT ,肺窗条件窗宽 15 0 0Hu ,窗位 - 6 70～ -70 0Hu。记录X线平片及HRCT表现并对比分析。结果 X线平片见肺容积增加和肺透亮度增加 4例 (14 3% ) ,肺纹理增粗 5例 (17 9% ) ,纵隔气肿 1例 ,总阳性率 2 5 % (7/ 2 8)。HRCT表现呈支气管壁增厚 15例 (5 3 6 % ) ,支气管扩张 6例 (2 1 4% ) ,马赛克征象 3例 (11 8% ) ,纵隔气肿 1例 ,小叶中心型肺气肿 4例 ,呼气末空气潴留 5例 ,总阳性率 71 4% (2 0 / 2 8)。结论 HRCT比X线平片更有效显示支气管哮喘患者的肺内异常表现 ,对支气管哮喘的诊断和鉴别诊断有一定价值
Objective To retrospectively analyze the pulmonary HRCT manifestations in 28 patients with bronchial asthma and compare them with plain radiographs. Methods Twenty-eight clinically diagnosed patients with bronchial asthma were aged from 25 to 75 years old, with an average of 375 years. There were 9 males and 19 females. All patients had X-ray and CT scan. Thick, high-frequency reconstruction algorithm and end-inspiratory scanning, and the other 7 cases with end-expiratory HRCT, lung window window width 15 0 0Hu, window level -670 ~ -70 0Hu. Record X-ray and HRCT performance and comparative analysis. Results X-ray showed that lung volume increased and pulmonary transparence increased 4 cases (14.3%), lung texture thickening in 5 cases (17 9%), mediastinal emphysema in 1 case, total positive rate 25% (7/2 8). HRCT showed bronchial wall thickening in 15 cases (53.6%), bronchiectasis in 6 cases (21.4%), mosaic signs in 3 cases (11.8%), mediastinal emphysema in 1 case, lobular heart-shaped emphysema in 4 Cases, end-expiratory air retention in 5 cases, the total positive rate of 71 4% (20/28). Conclusion HRCT is more effective than X-ray to show the abnormal lung manifestations in patients with bronchial asthma, bronchial asthma diagnosis and differential diagnosis of some value