Assessment of metastatic liver disease in patients with primary extrahepatic tumors by contrast-enhanced sonography versus CT and MRI .7 .王芹秀,雷成功.胰腺肿瘤的超声诊断及临床评价.中国医学影像技术,2004,20(Suppl):56-.35 .诸琦.超声内镜检查在胰腺疾病诊断中的价值/ /袁耀宗.胰腺病学新进展与新技术.上海:上海科学技术文献出版社,2000:371 ......