Our study confirmed that the ultrasonographic diagnosis of intrahepatic stone and gallbladder stone is very effective and reliable.It is also useful in diagnosis of common bile duct stone.

• 超音波对胆囊结石及肝内结石之诊断，不但很有效而且是可信度极高的一种检查方法，对总胆管结石之诊断也很有用。