title: [Value of dual-phase-helical CT in the preoperative diagnosis of pancreatic cancer--a prospective study].
abstract: OBJECTIVE
  A prospective study was performed to evaluate the accuracy of dual phase helical CT in suspected pancreatic cancer.
  
  
  METHODS
  Within one year 136 patients underwent helical CT with arterial and portal venous scans after bolus tracking and NaCl bolus injection. Evidence of pancreatic cancer and assessment of resectability were recorded using a standardised protocol. Suspected benign disease was verified by follow-up examination and clinical data, suspected malignant disease was correlated with biopsy or surgery.
  
  
  RESULTS
  For the detection of tumor the overall concordance was 92%, the sensitivity 98% and the specificity 70% (6 false positive, 1 false negative). Resectability was correctly assessed in 90% with a sensitivity of 92% and a specificity of 88% (4 false positive, 4 false negative). Vascular invasion was detected correctly in 91% (veins)-94% (arteries), lymph node invasion in 67% and liver metastasis in 94%.
  
  
  CONCLUSIONS
  Dual phase helical CT is a very reliable tool in the assessment of resectability in pancreatic cancer.
authors.affiliation: Institut für Klinische Radiologie, Klinikum Mannheim der Universität Heidelberg.
authors.forename: K J
authors.initials: KJ
authors.lastname: Lehmann
authors.forename: S J
authors.initials: SJ
authors.lastname: Diehl
authors.forename: R
authors.initials: R
authors.lastname: Lachmann
authors.forename: M
authors.initials: M
authors.lastname: Georgi
mesh_terms: D001706:Biopsy; D002760:Cholangiopancreatography, Endoscopic Retrograde; D003937:Diagnosis, Differential; D005188:False Negative Reactions; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D008113:Liver Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary*; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D010179:Pancreas / Q000098:blood supply; D010182:Pancreatic Diseases / Q000000981:diagnostic imaging* / Q000473:pathology; D010190:Pancreatic Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery*; D011169:Portal Vein / Q000000981:diagnostic imaging*; D015203:Reproducibility of Results; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods*