title: Preoperative evaluation of pancreaticobiliary tumor using MR multi-imaging techniques.
abstract: OBJECTIVE
  To evaluate the clinical value of MR multi-imaging techniques in diagnosing and preoperative assessment of pancreaticobiliary tumor.
  
  
  METHODS
  MR multi-imaging techniques, including MR cross-sectional imaging, MR cholangiopancreatography (MRCP) and 3D dynamic contrast-enhanced MR angiography (3D DCE MRA), were performed to make prospective diagnosis and preoperative evaluation in 28 patients with suspected pancreaticobiliary tumors. There were 17 cases of pancreatic adenocarcinoma, 8 cases of biliary system carcinoma and 3 cases of non-neoplastic lesions.
  
  
  RESULTS
  Using MR multi-imaging techniques, the accuracy in diagnosing the patients with pancreaticobiliary tumors was 89.3% (25/28). The accuracy in detecting the range of tumor invasion was 80.3% (57/71). The sensitivity, specificity, accuracy, positive and negative predictive value of MR multi-imaging techniques in preoperative assessment of the resectability of pancreaticobiliary tumor were 83.3%, 89.5%, 88.0%, 71.4%, and 94.4%, respectively. There was well diagnostic consistency between MR multi-imaging techniques and CT (kappa = 0.64, P<0.01). The fusion image could be made from MRCP and 3D DCE MRA images.
  
  
  CONCLUSIONS
  MR multi-imaging techniques can integrate the advantages of various MR images. The non-invasive "all-in-one" MR imaging protocol is the efficient method in diagnosing, staging and preoperative assessment of pancreaticobiliary tumor.
authors.affiliation: Department of Radiology, Renji Hospital, Shanghai Second Medical University, 145 Shandong Zhonglu, Shanghai 200001, China. zhongliang0128@yahoo.com.cn
authors.forename: Liang
authors.initials: L
authors.lastname: Zhong
authors.forename: Lei
authors.initials: L
authors.lastname: Li
authors.forename: Qiu-Ying
authors.initials: QY
authors.lastname: Yao
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001650:Bile Duct Neoplasms / Q000473:pathology*; D001653:Bile Ducts, Intrahepatic / Q000473:pathology*; D018281:Cholangiocarcinoma / Q000473:pathology*; D049448:Cholangiopancreatography, Magnetic Resonance / Q000379:methods* / Q000592:standards; D003138:Common Bile Duct Neoplasms / Q000473:pathology; D005260:Female; D005706:Gallbladder Neoplasms / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010190:Pancreatic Neoplasms / Q000473:pathology*; D011300:Preoperative Care; D011446:Prospective Studies; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity