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目的评价扩散加权成像(DWI)在鉴别肝单纯性囊肿和包虫囊肿特别是完全液化的肝包虫囊肿的价值。资料与方法20例囊性包虫病患者22个病灶,肝脏单纯囊肿9例10个病灶,均行b值500和1000 s/mm2的MRDWI序列扫描。结果b值500和1000 s/mm2的病灶ADC值以及病灶和周围肝实质的信号强度率均有显著性差异,肝脏单纯囊肿的表观扩散系数(ADC)值明显高于肝包虫囊肿,肝脏包虫囊肿的信号强度率明显高于肝脏单纯囊肿(P值<0.05)。结论肝脏MR DWI有助于鉴别肝脏单纯囊肿和肝脏囊性包虫囊肿。
Objective To evaluate the value of diffusion-weighted imaging (DWI) in differentiating hepatic hydatid cysts from hydatid cysts, especially completely liquefied hydatid cysts. Materials and Methods Twenty - two cases of cystic echinococcosis and nine cases of hepatic simple cyst were included in the study. MRDWI scan with b values of 500 and 1000 s / mm2 were performed. Results The ADC values of lesions at the b values of 500 and 1000 s / mm2, and the signal intensities of the lesions and the surrounding liver parenchyma were significantly different. The apparent diffusion coefficient (ADC) value of the liver pure cysts was significantly higher than that of the hepatic hydatid cysts and the liver Hydatid cyst signal intensity was significantly higher than the liver simple cyst (P value <0.05). Conclusions Liver MR DWI can be used to identify cystic echinococcosis and liver cyst.