title: Intravenous flat detector CT angiography for non-invasive visualisation of intracranial flow diverter: technical feasibility.
abstract: OBJECTIVE
  To demonstrate the feasibility of intravenous Flat Detector CT Angiography (FD-CTA) for visualisation of intracranial Flow Diverting Devices. Flow Diverting Devices are used increasingly for treatment of intracranial aneurysms. A close follow up is necessary because it becomes obvious that a significant proportion of aneurysms treated with these devices remain patent. A minimally invasive method is highly desirable.
  
  
  METHODS
  In two patients treated with flow diverters a Flat Detector CT (FD-CT) with intravenous contrast medium application was performed. Post-processing was performed using commercially available software.
  
  
  RESULTS
  In both patients the lumen of the device and the lumen of the aneurysm could be clearly evaluated. Some beam hardening artefacts due to the marker wires of the device were obvious.
  
  
  CONCLUSIONS
  Flat Detector CT with intravenous contrast material application to evaluate flow-diverting devices seems to be feasible. Further studies are necessary to perform comparative evaluation of FD-CTA with angiography and other techniques like MRA or conventional CT angiography.
authors: Department of Neuroradiology, University of Erlangen-Nuremberg, Schwabachanlage 6, 91054 Erlangen, Germany. tobias.struffert@uk-erlangen.de
authors: Tobias
authors: T
authors: Struffert
authors: Marc
authors: M
authors: Saake
authors: Sabine
authors: S
authors: Ott
authors: Tobias
authors: T
authors: Engelhorn
authors: Philipp
authors: P
authors: Gölitz
authors: Stephan
authors: S
authors: Kloska
authors: Marc
authors: M
authors: Doelken
authors: Arnd
authors: A
authors: Doerfler
mesh_terms: D000368:Aged; D015901:Angiography, Digital Subtraction; D002533:Cerebral Angiography / Q000379:methods*; D002560:Cerebrovascular Circulation; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging* / Q000628:therapy*; D011857:Radiographic Image Interpretation, Computer-Assisted; D014057:Tomography, X-Ray Computed / Q000379:methods*