脂肪抑制T_2加权成像与增强磁共振成像在鼻咽癌颈部淋巴结转移的应用价值

The valuation of fat-suppressed T_2WI and contrast enhanced MRI of neck lymph node metastasis in nasopharyngeal carcinoma

目的总结鼻咽癌颈部淋巴结转移的磁共振成像(MRI)表现,比较脂肪抑制技术T2加权成像(T2WI)与增强扫描MRI在鼻咽癌颈部淋巴结转移的作用。方法收集210例鼻咽癌颈部淋巴结转移脂肪抑制T2WI与增强扫描MRI资料,比较2种检查序列对鼻咽癌淋巴结转移分区、数量的判断。结果鼻咽癌颈部转移淋巴结分布自上向下发展,短时反转恢复序列(STIR)T2WI在分区及范围上具有优势,增强扫描MRI在淋巴结数量检出率上高于STIR T2WI。结论使用STIR T2WI结合增强MRI有利于鼻咽癌颈部淋巴结转移灶的显示。

Objective To analyse the magnetic resonance imaging（MRI） diagnosis of neck lymph node metasta- sis in nasopharyngeal carcinoma（NPC）, and compare fat-suppressed T2 weighted imaging（TEWI） and contrast enhanced MRI of neck lymph node metastasis in NPC. Methods Collected 210 cases of fat-suppressed TEWI and enhanced scanning MRI of neck lymph node metastasis in NPC, compared diagnosis of the partition and number of lymph node metastasis in NPC. Results Lymph node metastasis in NPC appeared in order from top to bottom, STIR TEWI had an advantage in the partitions and scope ,the contrast enhanced MRI was better than STIR T2WI in the number of lymph nodes detection rate. Conclusion The combination of STIR T2WI and enhanced MRI is favorable diagnosis of lymph node metastasis in NPC.