title: DynaCT in pre-treatment evaluation of aortic aneurysm before EVAR.
abstract: OBJECTIVE
  DynaCT(®) is a method for obtaining computed tomography (CT)-like images using a C-arm system. Our aim was to compare the accuracy of these images to multidetector CT (MDCT) images prior to endovascular aortic repair (EVAR).
  
  
  METHODS
  A non-consecutive group of 20 elective patients were prospectively exposed to MDCT and one additional DynaCT before EVAR. Six arterial measurements and nine anatomical areas were chosen to: (1) visualise the peri-aortic soft tissue and assess the possibility to diagnose a potential haemorrhage from a ruptured aneurysm and (2) make the pre-treatment measurements before insertion of stent graft. Differences between modalities and readers were statistically compared using a linear mixed model.
  
  
  RESULTS
  For maximum aortic diameter, a significant difference of 1.3 mm was found between techniques (p = 0.043). Visibility scores were significantly better for all areas in MDCT data. Pre-treatment evaluation with DynaCT before EVAR was possible for all areas; evaluation of the iliac arteries were suboptimal due to a limited imaging volume size. Significant inter-reader differences were found for all anatomical areas.
  
  
  CONCLUSIONS
  The result indicates that DynaCT gives sufficient information to determine the correct treatment and for selecting the proper stent graft before EVAR. A limited volume size reduces the evaluation of the iliac arteries.
authors.affiliation: Department of Technology, Sør-Trøndelag University College, Trondheim, Norway.
authors.forename: K R
authors.initials: KR
authors.lastname: Eide
authors.forename: A
authors.initials: A
authors.lastname: Ødegård
authors.forename: H O
authors.initials: HO
authors.lastname: Myhre
authors.forename: S
authors.initials: S
authors.lastname: Hatlinghus
authors.forename: O
authors.initials: O
authors.lastname: Haraldseth
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D017544:Aortic Aneurysm, Abdominal / Q000000981:diagnostic imaging* / Q000601:surgery*; D019917:Blood Vessel Prosthesis Implantation; D057510:Endovascular Procedures; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011300:Preoperative Care; D011446:Prospective Studies; D015607:Stents; D014057:Tomography, X-Ray Computed / Q000379:methods*