3.0T磁共振对原发性肝癌的诊断价值  

The value of 3.0 Tesla magnetic resonance in primary hepatocellullar carcinomas

作　　者：蔡磊[1] 张晶[1] 侯登华[1] 闫少宁[1] 

机构地区：[1]宁夏医科大学附属医院,宁夏银川750004

出　　处：《宁夏医学杂志》2010年第7期595-596,F0002,共3页Ningxia Medical Journal

摘　　要：目的分析肝癌的MRI表现,探讨其MRI特征及诊断价值。方法回顾性分析60例肝癌病例共76个病灶在3.0T磁共振设备上的常规MRI表现及弥散成像(DWI)的特点和ADC值的范围。结果肝癌在T2WI和DWI上表现为稍高信号,多期动态增强扫描大多表现为动脉期明显强化,门脉期以后强化相对减弱的强化方式,出现假包膜29个病灶,出现门静脉癌栓21例,腹腔淋巴结转移2例,肝癌的ADC值在b值选取800s/mm2时范围为(1.28±0.23)×10-3mm2/s。结论 T2WI及DWI可以显示大多数肝癌的信号特点,多期动态增强能更好地显示肝癌的血供特点及包膜和门脉癌栓,而ADC值在肝癌的鉴别诊断中意义重大。Objective To investigate magnetic resonance imaging（MRI） characteristics and diagnostic value of primary hepatocellular carcinomas.Methods The characteristics of the MRI and DWI with apparent diffusion coefficient（ADC） value in 60 patients with primary hepatocellullar carcinomas were retrospectively analyzed.Results Comparing with the surrounding liver parenchyma,lesions presented slightly signal intensity on DWI and on fat saturated T2WI,most of lesions showed intense enhancement during the arterial phase,and showed lower signal than that of the surrounding liver tissues in portal and delayed phase.There were 21 cases with the tumor thrombus in portal vein and 29 lesions with pseudo-capsules,2 cases appearing celiac lymph nodes metastasis.The ADC value of hepatocellular carcinomas was（1.28 ± 0.23） × 10-3mm2 /s when b value was 800s/mm2.Conclusion The MRI characteristics of most hepatocellular carcinomas can be showed on T2WI and DWI.Multi-phasic dynamic enhance scanning can be better in the blood supply of lesions and find the characteristics of pseudo-capsules and the tumor thrombus in portal vein.The measurement of ADC values is useful in MR diagnosis and differential diagnosis.

关 键 词：肝癌 磁共振成像 弥散成像 

分 类 号：R735.7[医药卫生—肿瘤]