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目的：通过ＣＴ、ＭＲＩ对中央型肺癌的对照研究，评价二者对中央型肺癌的诊断价值。方法：３６例中央型肺癌均经病理证实，男性２１例，女性１５例，年龄４０～８０岁。应用ＧＥＭＡＸ６４０ＣＴ与ＧＥＳｉｇｎａＣｏｎｔｏｕｒ０．５Ｔ超导磁共振成像系统，ＣＴ采用５ｍｍ薄层放大技术，ＣＴ增强。ＭＲＩ以１０ｍｍ层厚行横断Ｔ１、Ｔ２四回波技术及冠状Ｔ１、矢状Ｔ１加权成像，ＳＴＩＲ脂肪抑制序列。结果：ＣＴ可显示肿块大小、形态、密度位置尤其有无钙化点。增强ＣＴ可提高肿块与纵隔结构的分辨率，但在合并阻塞性肺炎、肺不张时肿块常显示不清，甚至不能区分肿块与实变之肺组织。ＭＲＩ多维成像可更准确地显示肿块的具体位置，肿块的信号变化规律，尤其是Ｔ２多回波技术可提供肿块及实变肺组织的诸多信息资料，并可分清肿块与纵隔大血管的关系。结论：ＭＲＩ对中央型肺癌的诊断价值优于ＣＴ检查。
OBJECTIVE: To evaluate the diagnostic value of both of them in central lung cancer by comparing the CT and MRI with central lung cancer. Methods: Thirty-six cases of central lung cancer were confirmed by pathology. There were 21 males and 15 females, aged 40-80 years. Application GEMAX640CT and GESignaContour0.5T superconducting magnetic resonance imaging system, CT using 5mm thin-layer amplification technology, CT enhanced. Tensile T1, T2 and echocardiographic T1-weighted imaging with coronary artery T1, sagittal T1 weighted imaging and STIR fat suppression were performed with 10mm slice thickness. Results: CT showed tumor size, shape, density, especially with or without calcification. Enhanced CT can improve the resolution of the tumor and mediastinal structures, but in the merger of obstructive pneumonia, atelectasis often show unclear mass, or even can not distinguish between the mass and consolidation of the lung tissue. MRI multi-dimensional imaging can more accurately display the specific location of the mass, mass signal changes, especially the T2 multi-echo technology can provide a large number of lumps and consolidation of lung tissue information, and can distinguish between the mass and mediastinal vessels of the relationship. Conclusion: MRI is superior to CT in the diagnosis of central lung cancer.