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目的比较分析肺癌与肺良性肿瘤的磁共振表现及病理基础。方法搜集原发性肺癌２１例，肺良性肿瘤５例，均经病理及临床证实。采用０２Ｔ磁共振成像仪，常规自旋回波序列，将肺良恶性肿瘤ＭＲＩ信号及形态学改变作一比较。结果肺癌表现为肿块＞３ｃｍ，分叶征，边缘毛糙，Ｔ１ＷＩ上呈现等或稍高信号Ｔ２ＷＩ上呈稍高或不均信号者为多（８３％）；肺良性肿瘤表现为肿块＜３ｃｍ，边缘光整，Ｔ１ＷＩ上呈稍低或等信号，Ｔ２ＷＩ上呈等或稍高信号者为多（６０％），二者之间有一定差异。肺癌的继发性改变有助于区分肺良性肿瘤。结论肺癌与肺良性肿瘤的ＭＲＩ表现有一定鉴别价值。
Objective To compare the magnetic resonance imaging findings and pathological basis between lung cancer and lung benign tumors. Methods 21 cases of primary lung cancer and 5 cases of benign lung tumor were collected. All of them were confirmed by pathology and clinical findings. MRI signal and morphological changes of benign and malignant tumors were compared using a 02T magnetic resonance imager and conventional spin echo sequences. Results The lung cancer showed mass>3cm, lobulated sign, rough edge, equal or slightly higher signal intensity on T1WI (T1WI=83%), and benign lung tumor (<3cm). In the lightening, there was a slightly lower or equal signal on T1WI, and there were more signals (60%) on T2WI with equal or slightly higher signals. There was a certain difference between the two. Secondary changes in lung cancer can help distinguish benign lung tumors. Conclusion The MRI findings of lung cancer and benign lung tumors have certain value.