title: The second ESGAR consensus statement on CT colonography.
abstract: OBJECTIVE
  To update quality standards for CT colonography based on consensus among opinion leaders within the European Society of Gastrointestinal and Abdominal Radiology (ESGAR).
  
  
  METHODS
  A multinational European panel of nine members of the ESGAR CT colonography Working Group (representing six EU countries) used a modified Delphi process to rate their level of agreement on a variety of statements pertaining to the acquisition, interpretation and implementation of CT colonography. Four Delphi rounds were conducted, each at 2 months interval.
  
  
  RESULTS
  The panel elaborated 86 statements. In the final round the panelists achieved complete consensus in 71 of 86 statements (82 %). Categories including the highest proportion of statements with excellent Cronbach's internal reliability were colon distension, scan parameters, use of intravenous contrast agents, general guidelines on patient preparation, role of CAD and lesion measurement. Lower internal reliability was achieved for the use of a rectal tube, spasmolytics, decubitus positioning and number of CT data acquisitions, faecal tagging, 2D vs. 3D reading, and reporting.
  
  
  CONCLUSIONS
  The recommendations of the consensus should be useful for both the radiologist who is starting a CTC service and for those who have already implemented the technique but whose practice may need updating.
authors.affiliation: Diagnostic and Interventional Radiology, University of Pisa, Pisa, Italy. emanuele.neri@med.unipi.it
authors.forename: Emanuele
authors.initials: E
authors.lastname: Neri
authors.forename: Steve
authors.initials: S
authors.lastname: Halligan
authors.forename: Mikael
authors.initials: M
authors.lastname: Hellström
authors.forename: Philippe
authors.initials: P
authors.lastname: Lefere
authors.forename: Thomas
authors.initials: T
authors.lastname: Mang
authors.forename: Daniele
authors.initials: D
authors.lastname: Regge
authors.forename: Jaap
authors.initials: J
authors.lastname: Stoker
authors.forename: Stuart
authors.initials: S
authors.lastname: Taylor
authors.forename: Andrea
authors.initials: A
authors.lastname: Laghi
mesh_terms: D023881:Colonography, Computed Tomographic / Q000592:standards*; D005060:Europe; D017410:Practice Guidelines as Topic; D011871:Radiology / Q000592:standards*