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目的：通过分析胸部较疑难的病例，总结胸部疾病诊断中多种影像互补作用。材料与方法：分析５０例经不同医院未确诊的较疑难病例。均有Ｘ线和ＣＴ材料，１７例有磁共振照片。常见病（肺炎、肺结核、肺癌）影像表现较特殊的２９例（５８％），余２１例（４２％）为少见病。这些病例作者均亲自做临床检查并全面分析影像材料。结果：胸片对于胸部较疑难病例正确诊断１１例（２２％）。ＣＴ诊断正确３２例（６４％）。磁共振有定性诊断价值者７例（占磁共振检查的４１％）。结论：（１）胸部正侧位片是胸部较疑难病例影像诊断的基础检查方法。（２）胸部ＣＴ是胸片常用而且主要的补充检查方法，在普通ＣＴ检查基础上有目的地采用增强扫描、高分辨ＣＴ扫描、螺旋ＣＴ扫描可提高ＣＴ诊断水平。（３）在ＣＴ基础上有目的地采用磁共振检查可发挥磁共振对于胸部疾病的诊断作用。
Objective: To summarize the complementary effects of multiple images in the diagnosis of chest diseases by analyzing more difficult chest cases. Materials and Methods: Fifty cases of undiagnosed more difficult cases in different hospitals were analyzed. Both X-ray and CT materials, 17 cases of magnetic resonance images. In common diseases (pneumonia, tuberculosis and lung cancer), 29 cases (58%) showed special images and 21 cases (42%) were rare. The authors of these cases personally conducted a clinical examination and a comprehensive analysis of imaging materials. Results: Chest radiographs were correctly diagnosed in 11 cases (22%) of patients with more complicated thorax. CT correct diagnosis of 32 cases (64%). Magnetic resonance imaging diagnosis of 7 cases (accounting for 41% of magnetic resonance imaging). Conclusion: (1) The chest is a lateral examination of the chest is more difficult cases of imaging diagnosis of basic inspection methods. (2) Chest CT is the commonly used and main supplementary examination method of chest radiography, and the purpose of enhanced scan, high resolution CT scan and spiral CT scan can improve the diagnostic level of CT on the basis of common CT examination. (3) CT based on the purpose of using magnetic resonance imaging can play a diagnostic role for the chest disease.