title: CT colonography using different reconstruction modi.
abstract: OBJECTIVE
  Performing computed tomography (CT) colonography, we compared different reconstruction modi for the detection of colorectal polyps.
  
  
  METHODS
  The CT data of 48 patients using 16-slice helical CT were analysed in axial slices, virtual-endoscopy and colon-dissection modus.
  
  
  RESULTS
  The sensitivity (specificity) for the detection of colonic polyps was 94% (80%) if using "colonic-dissection" tool and 89% (80%) if using "virtual-endoscopy" tool. The difference between the virtual endoscopy and colon dissection, considering polyps up to 4.9 mm, was significant.
  
  
  CONCLUSIONS
  Reconstruction software colon dissection improves the sensitivity of CT colonography.
authors.affiliation: Klinik für Strahlenheilkunde, Charité Campus Virchow-Klinikum, University Medical Center, Augustenburger Platz 1, Berlin 13353, Germany. r.roettgen@t-online.de
authors.forename: Rainer
authors.initials: R
authors.lastname: Röttgen
authors.forename: Frank
authors.initials: F
authors.lastname: Fischbach
authors.forename: Michail
authors.initials: M
authors.lastname: Plotkin
authors.forename: Michael
authors.initials: M
authors.lastname: Lorenz
authors.forename: Torsten
authors.initials: T
authors.lastname: Freund
authors.forename: Ralf Jürgen
authors.initials: RJ
authors.lastname: Schröder
authors.forename: Roland R
authors.initials: RR
authors.lastname: Felix
mesh_terms: D003111:Colonic Polyps / Q000175:diagnosis* / Q000000981:diagnostic imaging; D023881:Colonography, Computed Tomographic / Q000379:methods*; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D012680:Sensitivity and Specificity; D012984:Software