title: [CT-supported virtual intra-arterial endoscopy after stent implantation: phantom studies and the initial clinical results].
abstract: OBJECTIVE
  To evaluate the facilities of computed tomographic virtual intraarterial endoscopy (VIE). Imaging of an intravascular stent in a phantom study and clinical assessment in 10 patients.
  
  
  METHODS
  The optimal scan parameters for different 3 D reconstructions (MIP, SSD, VIE) were determined in a vessel phantom with intravascular stent. Furthermore, in vitro stenoses were analysed and initial in vivo investigations were performed.
  
  
  RESULTS
  The quality of CT-angiography (CTA) depended on the scanning parameters. VIE allowed the reconstruction of the intravascular surface of a stent.
  
  
  CONCLUSIONS
  VIE is a new kind of post-processing CTA reconstruction. It permits the visualisation of the intravascular structure of a stent. In vitro relevant stenoses were correctly detected. First clinical investigations support these results.
authors.affiliation: Abteilung Röntgendiagnostik I, Klinikum, Georg-August-Universität, Göttingen.
authors.forename: J
authors.initials: J
authors.lastname: Rodenwaldt
authors.forename: L
authors.initials: L
authors.lastname: Kopka
authors.forename: S
authors.initials: S
authors.lastname: Lotfi
authors.forename: E
authors.initials: E
authors.lastname: Grabbe
mesh_terms: D000792:Angiography / Q000295:instrumentation / Q000379:methods*; D001158:Arteries; D019723:Endoscopes; D004724:Endoscopy / Q000379:methods*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation / Q000379:methods*; D019047:Phantoms, Imaging; D012984:Software; D015607:Stents; D014057:Tomography, X-Ray Computed / Q000295:instrumentation / Q000379:methods*; D014584:User-Computer Interface
vernacular_title: CT-gestützte virtuelle intraarterielle Endoskopie nach Stentimplantation: Phantomstudien und erste klinische Ergebnisse.