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目的：研究肺癌增强ＭＲＩ表现的病理基础，探讨其在肺部诊断中的作用。材料与方法：４７例原发性支气管肺癌，１０例结核球及５例其他良性病灶行平扫和增强ＭＲＩ检查，分析其增强表现并与病理对照。结果：所有肺癌在静脉注入Ｇｄ－ＤＴＰＡ后均有强化，表现为３种形式：均匀型、不均匀型和厚壁空洞型，结核球多数表现为薄壁环形增强，各种增强形式有不同的病理基础。结论：肺癌的增强形式与结核球不同，因而Ｇｄ－ＤＴＰＡ增强ＭＲＩ有助于肺癌的鉴别
Objective: To study the pathological basis of enhanced MRI manifestations of lung cancer and explore its role in lung diagnosis. Materials and Methods: 47 patients with primary bronchogenic carcinoma, 10 patients with tuberculoma and 5 patients with other benign lesions underwent plain and enhanced MRI. Their enhanced performance was compared with pathology. RESULTS: All lung cancers were intensified after IV Gd-DTPA injection. There were three types of lung cancer: uniform, inhomogeneous, and thick-walled. Most of the tuberculosis balls showed thin-walled ring enhancement. Pathological basis. Conclusion: The enhanced form of lung cancer is different from that of tuberculosis. Therefore, Gd-DTPA-enhanced MRI is helpful for the identification of lung cancer.