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近１０年胸部影像技术发展很快。一种影像技术的出现突破另一种影像诊断的限度。各种影像技术的创新，不断扩大其应用范围。传统Ｘ线诊断由于Ｘ线分辨力的限度常局限于一定大小病变诊断。ＣＴ的出现由于ＣＴ具有较高密度分辨力可以显示胸片不能显示的病变，又由于螺旋ＣＴ的出
Nearly 10 years of rapid development of chest imaging technology. The emergence of one imaging technique breaks the limits of another imaging diagnosis. A variety of imaging technology innovation, expanding its scope of application. Traditional X-ray diagnosis due to the limitations of X-ray resolution is often limited to a certain size lesion diagnosis. The appearance of CT due to CT has a higher density resolution can display the chest X-ray can not display the lesions, but also because of spiral CT out