脂肪肝的CT及B超诊断

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。

CT and Ultrasonographic Diagnosis of Fatty Infiltration of the Liver(FIL)

Objective:To explore the specific features and value of CT and US in diagnosis of FIL.Methods:We retropretively analyzed the CT material of 98 cases and ultrasonographic material of 78 cases with FIL.Results:Of 98 cases with CT materials,hepatic blood vessel revelation was 36,peritoneum revelation was 36,of 78 cases with ultrasongraphic materials,the echo of vessel weakened was 33,the echo of fibrous spetum weakened was 23.Conclusion:The reduction of hepatic denisty is the cause of peritoneum revealed in CT.According to the degree of hepatic density reducted,the ratios of CT attenuation value of liver to spleen,the degree of hepatic blood vessel revelation and the degree of revelation of peritoneum which surround the outside of the liver,the FIL was divided into three classes.While corresponding to these three classes,the sonography showed that the echo strengthened and the light dot of the liver became dense ,the echoes of vessel and fibrous spetum of lever were weakened respectively.Based on this we can eatimate the degree of FIL and the conditions of function of remained liver it is valuable in clinical treatment and prognosis.