title: [Preoperative evaluation of vascular involvement and general resectability of pancreatic carcinoma by using 64-slice spiral computed tomographical angiography].
abstract: OBJECTIVE
  To assess for preoperative evaluation of 64-slice spiral computed tomographical angiography (64-SCTA) to predict vascular involvement and general resectability of pancreatic malignant tumors.
  
  
  METHODS
  The material of 64-SCTA in 34 cases were retrospectively analyzed. Preoperative imaging findings were correlated with intraoperative and histopathologic results.
  
  
  RESULTS
  For the arterial tumor invasion based on 64-SCTA findings, 1 grade was in 8 cases; 2 grade, 6 cases; 3 grade, 8 cases; 4 grade, 10 cases;5 grade, 2 cases.Regarding respectability, the sensitivity, specificity, accuracy, positive predictive value (PPV), negative predictive value (NPV) were 92.9%, 95.0%,94.1%, 92.9%, 95.0%. Kappa value was 0.879 (P < 0.01). Receiver operator characteristic (ROC) analysis revealed an area under the curve (AUC) of 0.943 (P < 0.01). For the venous tumor infiltration, 1 grade was in 0 case; 2 grade, 6 cases; 3 grade, 6 cases; 4 grade, 13 cases; 5 grade, 9 cases. Regarding respectability, these values for those tumors with vein invasion were 78.6%, 95.0%, 88.2%, 91.7%, 86.4%. Kappa value was 0.752 (P < 0.01). ROC analysis showed an AUC of 0.927 (P < 0.01).
  
  
  CONCLUSIONS
  64-SCTA can provide reliable information for vascular involvement and general resectability of pancreatic malignant tumors. 64-SCTA has high value in clinical application.
authors.affiliation: Department of Radiology, Medical College of Xi'an Jiaotong University, Xi'an, China. imagingzhang@126.com
authors.forename: Yun
authors.initials: Y
authors.lastname: Zhang
authors.forename: Zhi-jie
authors.initials: ZJ
authors.lastname: Jian
authors.forename: Ting-ting
authors.initials: TT
authors.lastname: Zhao
authors.forename: Yu-xin
authors.initials: YX
authors.lastname: Fan
authors.forename: Shao-hui
authors.initials: SH
authors.lastname: Ma
authors.forename: Lin
authors.initials: L
authors.lastname: Wang
authors.forename: Liang
authors.initials: L
authors.lastname: Yu
authors.forename: Chang
authors.initials: C
authors.lastname: Liu
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000792:Angiography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010190:Pancreatic Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D012189:Retrospective Studies; D036542:Tomography, Spiral Computed