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目的：探讨ＣＴ及Ｂ超检查对脂肪肝的诊断价值及特征性表现。方法：作者回顾分析了脂肪肝的９８例ＣＴ及７８例Ｂ超资料。结果：９８例ＣＴ中肝内血管及腹膜显影各３６例；７８例Ｂ超中３３例肝内血管回声减弱，２３例纤维隔回声减弱。结论：ＣＴ中腹膜显影原因在于肝脏密度的减低。根据ＣＴ中肝密度减低程度、肝脾ＣＴ值之比、肝内血管显示、肝表面腹膜显影程度将脂肪肝分成三级。Ｂ超中相应有肝回声增强光点密集程度、肝内血管纤维隔回声减弱程度的三级改变。据此可对脂肪肝病变程度、肝功能实质状况做出估价，对临床治疗及预后均有重要参考价值。
Objective: To investigate the diagnostic value and characteristic manifestation of fatty liver by CT and B-ultrasound. Methods: The authors retrospectively analyzed 98 cases of fatty liver CT and 78 cases of B-ultrasound data. Results: Thirty-six cases of intrahepatic blood vessels and peritoneum were developed in 98 cases of CT respectively. The echogenicity of hepatic vessels decreased in 33 cases of 78 cases of B ultrasound, and the echo of fiber in 23 cases was weakened. CONCLUSION: Peritoneal imaging in CT is due to a reduction in liver density. According to CT in the degree of reduction of liver density, liver and spleen CT value ratio, intrahepatic vascular showed that the degree of liver surface peritoneal development will be divided into three levels of fatty liver. B ultrasound in the corresponding enhancement of liver echo point density, intrahepatic vascular fiber echo reduction of three levels of change. Accordingly, the degree of fatty liver disease, the actual condition of liver function to make a valuation of clinical treatment and prognosis have important reference value.