DR在支气管扩张症诊断中的应用研究

Application of Digital Radiography in Diagnosis of Bronchiectasis

目的 探讨DR胸部影像中对支气管扩张症病灶进行计算机图像后处理的应用价值 .方法 选取 10 0例经临床或CT确诊的支气管扩张症的DR胸部影像 .①采用影像对照方法 ,评价DR平片、影像增强片对支气管扩张病灶的显示能力 .②对DR影像增强前后的囊状透光区进行灰度测量 ,比较其囊壁囊腔平均差值 ,观察其灰度轮廓的特征 .结果 ①DR平片、影像增强片对支气管病灶的显示 ,有显著差异 .②DR胸片影像增强前后囊状病灶灰度轮廓线呈凹形城墙样曲线 ,而正常支气管管腔轮廓线无此改变 .③DR胸片影像增强前后囊壁囊腔灰度平均差值具显著差异 .结论 DR胸片经数字化影像增强技术处理 ,对显示支气管扩张症的病灶明显优于处理前的DR平片 .

Objective To investigate the usefulness of graphic enhancement and gray scale contour techniques with digital radiography in the diagnosis of bronchiectasis. Methods 100 DR chest films of patients with proven bronchiectasis were selected for the study. graphic enhancement was fulfilled with computer. The gray scale of cystic translucency was assessed before and after graphic enhancement. The ratio of gray scale between cystic vesica and cystic wall and the gray scale contour of cystic translucency were calculated. Results As compared with the direct DR, (1) graphic enhancement technique could significantly improve the detection of bronchiectasis; (2) the castle contour line of cystic translucency was more obvious; (3) there was significant difference in the mean gray scale deviation between cystic vesica and cystic wall. Conclusions The digital graphic enhancement technique could improve the diagnosis of bronchiectasis with DR system.