肝硬化再生结节、肝不典型增生结节和小肝癌结节的影像学特征分析

Analysis on the Imaging Features of Regenerative Nodules in Cirrhosis,Dysplastic Nodules in Cirrhosis and Small Hepatocellular Carcinoma

目的分析肝硬化再生结节(RN)、肝不典型增生结节(DN)和小肝癌结节(sHCC)的影像学特征。方法回顾性分析78例肝内结节患者的MRI影像学资料,探讨RN、DN和sHCC的影像学特征。结果DWI联合ADC对RN、DN、sHCC的检出率与病理活检相比,无显著差异(P>0.05)。RN、DN在b值较低时DWI表现为高信号,sHCC在b值较高时DWI表现为高信号;RN的ADC显著高于DN和sHCC(P<0.05)。RN的T1WI为等或高信号,T2WI为低信号;DN则与RN相位信号相反;sHCC的T1WI为稍低或等信号,T2WI为稍高信号。结论核磁共振成像对RN、DN和sHCC有较好的鉴别效果。

Objective To analyze the imaging features of regenerative nodules(RN)in cirrhosis,dysplastic nodules(DN)in cirrhosis and small hepatocellular carcinoma(sHCC).Methods The MRI imaging data of 78 patients with intrahepatic nodules were retrospectively analyzed to explore the imaging features of RN,DN and sHCC.Results Compared with pathological biopsy,DWI combined with ADC showed no significant difference in the detection rates of RN,DN and sHCC(P>0.05).The DWI of RN and DN showed high signal at low b value,while the DWI of sHCC showed high signal at high b value.The ADC of RN was significantly higher than that of DN and sHCC(P<0.05).RN showed equal or high signal on T1WI and low signal on T2WI;DN was opposite to RN phase signal;sHCC showed slightly low or equal signal on T1WI and slightly high signal on T2WI.Conclusions MRI has good differentiating effect on RN,DN and sHCC.