原发性和转移性肝癌的彩色多普勒超声分析

目的：分析原发性肝癌（HCC）和转移性肝癌（MHC）的血流动力学超声特征，为诊断和鉴别诊断提供依据。方法：HCC142人，165个肿块；MHC49人，78个肿块，彩色多普勒（CDFI）检测瘤周及瘤内的血供情况，测量最大血流速度（Vmax)和阻力指数（RI）。将两组资料分别为小肝癌、结节型及块状型进行对比分析。结果：随着肿块增大，两组肿块增加，血流检出率增高；HCC组小肝癌的血流检出率高于MHC组；HCC以瘤内复合血供为主，MHC以瘤周复合血供为主。随肿块增大，HCC组Vmax和RI随之增高，而MHC组RI增加，Vmax无明显增高。结论：原发性肝癌与转移性肝癌的血液动力学表现明显不同，CDFI对二者的诊断及鉴别诊断具有重要作用。

Analysing Characteristics of Primary and Secondary Hepatic Tumors with Color Doppler Ultrasonography

Objective:Patterns of hemodynamic changes of hepatocelluler carcinoma(HCC)and metastatic hepatic cancer(MHC)were analysed by color Doppler imaging(CDFI)to provide evidences for diagnosis and differential diagnosis.Methods:One hudred and sixty five tumors in 142 cases with HCC and 78 tumors in 49 cases with MHC were studied using CDFI.The maximum blood flow velocity(Vmax)and the resistane index(RI)of the feeding vessels for the tumor were measured.All the tumors of HCC and MHC were classified into three types:the small,nodular and lumpy(huge node)hepatic cancer.Both Vmax and RI were analysed in these types.Results:The Larger the diameter of the tumor,the richer the blood flow,the higher the detective rate of the blood flow.And the detective rate was significantly higher in small cancers of HCC group than that of MHC group.In HCC combined pattern predominated in intratumoral blood flow,while in MHC the pattern predominated in peritumoral blood flow.The Vmax and RI in HCC were increased with the enlargement of the tumor,so did RI in MHC but did not Vmax.Conclusions:There are significant differences between the patterns of hemodynamic changes in HCC and MHC.CDFI plays an important role in the diagnosis and differnetial diagnosis of HCC and MHC.