No encephalopathy in Grade I, 6 cases in Grade II, 4 in Grade III.There is a correlation between episode risks of encephalopathy and the hepatic cirrhosis grade by spiral CT portography.

• 一级无肝性脑病，二级有肝性脑病6例，三级有肝性脑病4例，肝性脑病发生的风险与16排螺旋CT门静脉造影对肝硬化分级存在一定相关性。