对比研究了２１例弥漫型肝癌（ＤＬＣ）及２０例肝硬化的彩色多普勒血流显像（ＣＤＦＩ）特征，并以３０例正常人作对照。结果发现：高频探头可检出ＤＬＣ肝内微小低回声结节；ＣＤＦＩ显示，ＤＬＣ组肝内彩色血流明显增加，呈五彩缤纷状，血管走行弯曲，肝静脉变窄，门脉栓塞；以肝内动脉峰流速（ＭＡＸ）＞７０ｃｍ·ｓ－１为临界值来判断良恶性，其敏感性、特异性、准确性分别为９５．２４％，９５％，９５．１２％。 The color Doppler flow imaging (CDFI) features of 21 cases of diffuse liver cancer (DLC) and 20 cases of liver cirrhosis were comparatively studied and compared with 30 normal controls. The results showed that high-frequency probes can detect micro-low echogenic nodules in liver of DLC; CDFI showed that color blood flow in liver was significantly increased in DLC group. It was colorful and colorful. Blood vessels were flexed, hepatic veins were narrowed, and portal vein embolization was performed. The internal arterial peak flow velocity (MAX)>70 cm·s-1 was the critical value to judge benign and malignant lesions. The sensitivity, specificity, and accuracy were 95.24%, 95%, and 95.12%, respectively.