Document Detail

Technical feasibility of 2D-3D coregistration for visualization of self-expandable microstents to facilitate coil embolization of broad-based intracranial aneurysms: an in vitro study.
MedLine Citation:
PMID:  19756564     Owner:  NLM     Status:  MEDLINE    
INTRODUCTION: The use of self-expandable microstents for treatment of broad-based intracranial aneurysms is widely spread. However, poor fluoroscopic visibility of the stents remains disadvantageous during the coiling procedure. Flat detector angiographic computed tomography (ACT) provides high resolution imaging of microstents even though integration of this imaging modality in the neurointerventional workflow has not been widely reported. METHODS: An acrylic glass model was used to simulate the situation of a broad-based sidewall aneurysm. After insertion of a self-expandable microstent, ACT was performed. The resulting 3D dataset of the Microstent was subsequently projected into a conventional 2D fluoroscopic roadmap. This 3D visualization of the stent supported the coil embolization procedure of the in vitro aneurysm. RESULTS: In vitro 2D-3D coregistration with integration of 3D ACT data of a self-expandable microstent in a conventional 2D roadmap is feasible. CONCLUSIONS: Unsatisfying stent visibility constrains clinical cases with complex parent vessel anatomy and challenging aneurysm geometry; hence, this technique potentially may be useful in such cases. In our opinion, the clinical feasibility and utility of this new technique should be verified in a clinical aneurysm embolization study series using 2D-3D coregistration.
Gregor Richter; Marcus Pfister; Tobias Struffert; Tobias Engelhorn; Marc Doelken; Martin Spiegel; Joachim Hornegger; Arnd Doerfler
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Neuroradiology     Volume:  51     ISSN:  1432-1920     ISO Abbreviation:  Neuroradiology     Publication Date:  2009 Dec 
Date Detail:
Created Date:  2009-11-03     Completed Date:  2010-01-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  1302751     Medline TA:  Neuroradiology     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  851-4     Citation Subset:  IM    
Department of Neuroradiology, University of Erlangen-Nuernberg, Erlangen, Germany.
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MeSH Terms
Angiography / methods*
Blood Vessel Prosthesis*
Embolization, Therapeutic / instrumentation,  methods*
Feasibility Studies
Imaging, Three-Dimensional / methods*
Reproducibility of Results
Sensitivity and Specificity
Subtraction Technique*
Surgery, Computer-Assisted / methods
Tomography, X-Ray Computed / methods*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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