磁共振扩散加权成像对肝癌的诊断及鉴别诊断

Diffusion weighted magnetic resonance imaging in diagnosis and differential diagnosis of hepatocellular carcinoma

目的探讨采用磁共振扩散加权成像鉴别诊断肝癌的效果。方法选取2013年6月-2015年5月在我院接受检查的占位性病变患者85例,其中原发性肝细胞癌28例,肝血管瘤30例,转移瘤15例,肝囊肿12例,均行磁共振扩散加权成像扫描,比较不同肝脏占位病变ADC值及不同b值下ADC值。结果不同肝脏占位病变ADC值随b值差的升高而降低,原发性肝癌ADC值明显低于肝血管瘤、转移瘤、肝囊肿,差异有统计学意义（P〈0.05）;b值差越大越接近实际DC值,且波动幅度较小。结论通过磁共振扩散加权成像量化分析ADC值可提高肝癌的诊断及鉴别效果。

Objective To investigate the effect of magnetic resonance diffusion weighted imaging in the differential diagnosis of liver cancer. Methods The 85 patients with occupying lesions in our hospital from June 2013 to May2015 in our hospital were selected,including 28 cases of primary hepatocellular carcinoma,30 cases of hepatic hemangioma,15 cases of metastatic tumor,12 cases of hepatic cyst,They were scanned by diffusion weighted magnetic resonance imaging,the ADC value and ADC value of different liver lesions with different b values were compared. Results The ADC values of different liver lesions were decreased with the increase of b value,The ADC value of primary liver cancer was significantly lower than that of hepatic hemangioma,metastasis and hepatic cyst,the difference was statistically significant（P〈0.05）;The b value difference was more close to the actual value of DC,and the fluctuation was small.Conclusion Quantitative analysis of ADC value by MR diffusion weighted imaging can improve the diagnosis and differential diagnosis of hepatocellular carcinoma.