Clinical Neuroradiology

, Volume 24, Issue 1, pp 43–49

Angiographic C-arm CT visualization of the Woven EndoBridge Cerebral Aneurysm Embolization Device (WEB): First Experience in an Animal Aneurysm Model

  • T. Struffert
  • S. Lang
  • E. Adamek
  • T. Engelhorn
  • C. M. Strother
  • A. Doerfler
Original Article



Improvements in the imaging capabilities of angiographic C-arm computed tomography (CT) using flat detector angiographic (FD-CT) systems now provide a means for the in vivo visualization of devices used for the treatment of intracranial aneurysms. One such device, the WEB embolization device, is made of a braided mesh of nitinol wires, the size of which are near to the limits of visualization using conventional x-ray fluoroscopy. Our hypothesis was that the imaging of these implants C-arm CT would provide useful information regarding their positioning and deployment.


In five New Zealand white rabbits elastase induced aneurysms were created and subsequently treated using a WEB. Imaging was performed using digital subtraction angiography (DSA), X-ray imaging and two different Angiographic C-arm CT protocols. The images were evaluated by two neuroradiologists using an evaluation scale.


The mesh of the WEB was barely visible on the DSA or x-ray fluoroscopy images. Volume rendering technique (VRT) reconstruction and multiplanar reconstruction (MPR) of images done using the C-arm CT protocols clearly delineated the shape and structure of the device. Contrast-enhanced MPR and VRT reconstructions allowed assessment of the status of blood flow in the aneurysms. Beam hardening artifacts caused by platinum markers on the WEB were present.


In vivo C-arm CT imaging of the WEB is feasible and allows precise determination of the position and deployment status of the device. On contrast-enhanced images the occlusion status of aneurysms and the positioning of the WEB in relationship to the parent artery can be evaluated. C-arm-CT may serve as a minimal-invasive follow-up imaging modality.


WEB device Flat-detector computed tomography Angiographic C-arm CT Endovascular treatment aneurysm 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • T. Struffert
    • 1
  • S. Lang
    • 1
  • E. Adamek
    • 1
  • T. Engelhorn
    • 1
  • C. M. Strother
    • 2
  • A. Doerfler
    • 1
  1. 1.Department of NeuroradiologyUniversity of Erlangen-NurembergErlangenGermany
  2. 2.Department of RadiologyUniversity of WisconsinMadisonUSA

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