Document Detail

A carving method to determine an optimal working projection using three-dimensional volume rendering digital subtraction angiography in coil embolization of cerebral aneurysms.
MedLine Citation:
PMID:  22374131     Owner:  NLM     Status:  Publisher    
BackgroundA working projection in coil embolization of a cerebral aneurysm is usually determined using three-dimensional volume rendering digital subtraction angiography (3D VRDSA), in which the boundary between an aneurysm and its parent artery cannot be identified simultaneously on the front and back surfaces of the vessel. A new method was devised to obtain a more optimal working projection.Methods83 patients with aneurysms being treated by embolization were retrospectively evaluated. An aneurysm was accurately distinguished from the parent artery by observation of front, back, proximal and distal sides of the vessel on 3D VRDSA (carving method). An optimal working projection with simultaneous identification of the front and back boundary lines was determined using a translucent vessel complex combined with the carved aneurysm.ResultsIn 32 aneurysms (38.6%), the optimal working projection was consistent with the working projection that had been used during the procedure. In terminal type aneurysms, the angle difference between the optimal and actual working projections was significantly smaller than in the other types (p<0.05). Aneurysms with a maximal diameter <5 mm showed a significantly larger angle difference between the optimal and actual working projections than aneurysms with a maximal diameter ≥5 mm (p<0.05).ConclusionIn more than half of the patients, the actual working projection was inaccurate. The carving method might be useful to determine working projections, especially for aneurysms other than the terminal type and/or those with a maximal diameter <5 mm.
Keiko Kitazawa; Takatoshi Sorimachi; Yasushi Ito; Yukihiko Fujii
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-2-28
Journal Detail:
Title:  Journal of neurointerventional surgery     Volume:  -     ISSN:  1759-8486     ISO Abbreviation:  -     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-2-29     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101517079     Medline TA:  J Neurointerv Surg     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Neurosurgery, Brain research Institute, University of Niigata, Niigata, Japan.
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