The predict model for CBD stones consists of 5 variables that are ultrasonographically showing CBD stones or bile duct dilation(BDD),aged above 65 years,fever,serum alkaline phosphatase level greater than 121 IU/L and serum amylase level above 100 U/L.

• 根据5项指标:B超发现胆总管扩张或胆总管结石、年龄大于65岁、发热、血清碱性磷酸酶>121 IU/L、血清淀粉酶>100 U/L,可预测胆总管结石存在的可能性。