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目的：探讨X线数字成像及后处理对肺部结节性病灶的诊断价值。材料和方法：使用SiemensPolystar·FluorospotHX线数字成像和处理系统分别对12个用Philips肺部Phantom叠加肥皂制作之不同大小及形态之结节模型以及30例不同病理之肺部结节性病灶，进行摄片及图像后处理，分别作0％～100％边缘增强。结果：经对12个不同肺部结节模型及30例肺部结节性病灶的原始图像与后处理图像比较研究后发现，所有图像都明显地提高了质量，并以15％～60％的边缘增强为好；所有结节模型及结节性病灶之内部及表面结构比原始图像显示更好。结论：胸部平片是诊断肺部结节性病灶的首选方法，用数字成像及边缘增强等后处理后能显示直径更小的病灶（≥0．2cm），能更好地显示病灶的内部及表面结构，对病灶的检出及良恶性病变的鉴别诊断有很大帮助。
Objective: To investigate the diagnostic value of X-ray digital imaging and post-processing on pulmonary nodular lesions. MATERIALS AND METHODS: Twelve lung nodular lesions of different sizes and morphologies made using Philips lung Phantom superposed soap and 30 pulmonary nodular lesions of different pathologies were taken using a Siemens Polystar FluorospotHX line digital imaging and processing system Slice and image post-processing, respectively, 0% to 100% edge enhancement. Results: Comparing the original image with the post-processed image of 12 different pulmonary nodules and 30 cases of pulmonary nodular lesions, we found that all the images improved the quality remarkably. Edge enhancement is better; the internal and surface structures of all nodular models and nodal lesions are better than the original image. CONCLUSIONS: Plain radiographs are the preferred method for the diagnosis of pulmonary nodular lesions. Digital imaging and edge enhancement can be used to display lesions with smaller diameters (≥0.2cm), which can better show the internal and / Surface structure, the detection of lesions and benign and malignant lesions of the differential diagnosis is of great help.