低磁场MRI对肺癌的诊断

目的 研究肺癌在低磁场中的MRI表现，探讨MRI在肺癌诊断中的价值。方法 对132例经手术病理证实的肺癌行常规MRI检查。结果 肺癌在T1WI上多呈均匀中等信号，类似于肌肉信号；在T2WI上多呈不均匀高信号。MRI对显示肺癌淋巴结转移及胸腔积液效果极佳；对肺癌犯大血管、支气管、胸膜、胸壁及心包等征象的显示较好；对区别肿块与阻塞性病变也有一定的价值。结论 根据上述征象及肿块的形态学特征，可初步诊断肺癌。

Low field MRI in the diagnosis of bronchogenic carcinoma

Objective To evaluate low magnetic field MRI findings for diagnosis of bronchogenic carcinoma.Methods Conventional MRI of surgical patholo gically confimed bronchogenic carcioma(132 cases)were analysed.Results The carcinomatous masses have generally middle signal intensity with homogeneous appearance on T 1W images,and high signal intensity with heterogenous appearance on T 2W images.MRI is an efficient modality to show the hilar and mediastinal lymph node metastases,pleural effusions and carcinmatous invasions of the great vessel,the bronchus,the pleura,the chest wall,and pericardium.It is possible to distinguish mass from obstuctive lesion on MRI.Conclusion Accrding to the mentioned sign and the morphological features of the carcinomatous masses,primary diagnosis of bronchogenic carcinoma can be made on MRI.