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目的 :探讨、比较MRI和CT在恶性胸膜间皮瘤临床诊断中的意义。方法 :2 5例经病理组织学或细胞学证实的恶性胸膜间皮瘤患者 ,术前均进行了MRI和CT检查 ;比较分析其影像学表现特点及其临床意义。结果 :MRI除了对肿瘤内钙化的显示率低于CT外 ,对恶性胸膜间皮瘤形态学的观察普遍优于或等于CT ,尤其对叶间胸膜及横膈胸膜增厚的显示、肿块侵犯胸壁或膈肌以及肺门或纵隔淋巴结的显示优于CT。恶性胸膜间皮瘤在T1WI上呈低信号或等信号 ,而在T2 WI及增强T1WI上绝大部分呈高信号。结论 :与CT比较 ,MRI对恶性胸膜间皮瘤的TNM分期以及治疗方案的制订更具指导意义。
Objective: To explore and compare the significance of MRI and CT in the clinical diagnosis of malignant pleural mesothelioma. Methods: Twenty-five patients with malignant pleural mesothelioma confirmed by histopathology or cytology were examined with MRI and CT before operation. The imaging features and clinical significance were compared and analyzed. RESULTS: In addition to the lower rate of intraarterial calcification than CT, the MRI findings of malignant pleural mesothelioma were generally better than or equal to CT, especially for pleural and diaphragmatic pleural thickening. The mass invasion of the chest wall Or diaphragm and hilar or mediastinal lymph nodes better than CT. Malignant pleural mesothelioma in T1WI showed low signal or equal signal, and in T2 WI and enhanced T1WI most of the high signal. Conclusion: Comparing with CT, MRI is more instructive in the development of TNM stage and treatment of malignant pleural mesothelioma.