title: Effect of colonic distention on superiority of supine versus prone views in screening computed tomographic colonography.
abstract: OBJECTIVE
  The purpose of this study was to evaluate the effect of colonic distention in computed tomographic colonography (CTC).
  
  
  METHODS
  There were 3941 adults who underwent CTC with distention by either carbon dioxide (CO(2); n=2099) or room air (RA; n= 1733). Supine distention and prone distention were prospectively assessed and compared.
  
  
  RESULTS
  With CO(2), distention on the supine view was superior in 72.1% (1514/2099) of the patients; with RA, the prone view was better in 56.8% (984/1733) (P<.0001).
  
  
  CONCLUSIONS
  With CO(2), the supine data set is more often the superior view, whereas with RA, the prone data set is more often preferred.
authors.affiliation: Department of Radiology, University of Wisconsin Medical School, Madison, WI, USA.
authors.forename: Steven J
authors.initials: SJ
authors.lastname: Michel
authors.forename: Perry J
authors.initials: PJ
authors.lastname: Pickhardt
authors.forename: David H
authors.initials: DH
authors.lastname: Kim
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Taylor
mesh_terms: D002245:Carbon Dioxide; D003106:Colon / Q000000981:diagnostic imaging* / Q000187:drug effects*; D003110:Colonic Neoplasms / Q000000981:diagnostic imaging*; D023881:Colonography, Computed Tomographic / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016684:Prone Position; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D016683:Supine Position