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目的：探讨肺内良性病变的磁共振表现及其诊断价值。材料和方法：收集２９例经病理证实的良性病变，结合ＣＴ分析其ＭＲＩ表现及诊断价值。ＭＲＩ成像采用ＤＩＳＯＮＩＣＳ０．３５Ｔ超导成像系统，行横断面Ｔ１、Ｔ２加权及冠状面Ｔ１加权成像。结果：除１例腺瘤及１例炎性肉芽肿术前ＭＲＩ误诊为肺癌外，其余病例之ＭＲＩ诊断基本与最后诊断相符，其中结核球、球形干酪肺炎、阿米巴脓肿、动静脉瘘的ＭＲＩ表现具有特征性；错构瘤、炎性假瘤、巨大淋巴结增生症及非特异性肉芽肿等结合形态学及ＣＴ表现也大都可以作出正确诊断。结论：ＭＲＩ通过ＣＴ的帮助，对大多数肺内良性病变可作出定位及定性诊断，但需要更多病例的积累和研究
Objective: To investigate the magnetic resonance imaging findings and diagnostic value of benign pulmonary lesions. Materials and Methods: Twenty-nine cases of benign lesions confirmed by pathology were collected and their MRI findings and diagnostic value were analyzed by CT. MRI imaging using DISONICS 0.35T superconducting imaging system, transverse T1, T2 weighted and coronal T1 weighted imaging. Results: In addition to 1 case of adenoma and 1 case of inflammatory granulomatous misdiagnosed as lung cancer before MRI, the MRI diagnosis of other cases was basically consistent with the final diagnosis, including tuberculosis ball, spherical cheese pneumonia, amoebae abscess, arteriovenous fistula MRI features are characteristic; hamartoma, inflammatory pseudotumor, giant lymph node hyperplasia, and non-specific granuloma combined morphology and CT manifestations can also make the correct diagnosis. Conclusion: MRI can be used to locate and qualitatively diagnose most benign lung lesions with the help of CT, but more cases need to be accumulated and studied.