[CT-supported virtual intra-arterial endoscopy after stent implantation: phantom studies and the initial clinical results].
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.
Rodenwaldt
J
J
Abteilung Röntgendiagnostik I, Klinikum, Georg-August-Universität, Göttingen.
Kopka
L
L
Lotfi
S
S
Grabbe
E
E
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
CT-gestützte virtuelle intraarterielle Endoskopie nach Stentimplantation: Phantomstudien und erste klinische Ergebnisse.