Methods:30 patients with choledocholithiasis,cholangiocarcinoma,pancreatic head carcinoma and ampullar tumor were examined by N CTCP. The results of N CTCP,ERCP and surgical pathology were analysed.

• 方法 :对 3 0例胆管结石、胆管癌、胰头癌、壶腹癌进行N CTCP成像 ,并与内窥镜逆行胰胆管造影 (ERCP)及手术病理结果对照。