Surgical treatment of poorly visualised and complex cerebrovascular lesions using pre-operative angiographic data as angiographic DynaCT datasets for frameless stereotactic navigation

Acta neurochirurgica
Jin Wee TeePeter Hwang

Abstract

Digital subtraction angiography (DSA) is the "gold standard" for the imaging of cerebrovascular lesions, particularly cerebral aneurysms and arteriovenous malformations (AVMs). Current stereotactic navigation is based on computed tomography (CT) and magnetic resonance (MR) images, which-even despite the use of CT angiographic (CTA) or MR angiographic (MRA) sequences-may not reveal small lesions, and may not demonstrate all the different facets of complex lesions. To develop frameless stereotactic protocols based on pre-operative cerebral angiograms for enhancing precision in intra-operative navigation and improve patient outcomes. Pre-operative angiograms were obtained for ten patients requiring surgery for complex and/or poorly visualised cerebrovascular lesions. The angiographic data were captured as an angiographic DynaCT dataset and fused to pre-operative CT or MR imaging stereotactic sequences for pre-operative planning and intra-operative navigation. The utility of the angiographic DynaCT datasets for surgical navigation and treatment were assessed by the treating neurosurgeon. This technique enabled precise navigation and better treatment of cerebrovascular lesions that were either inadequately imaged or invisible to con...Continue Reading

References

Mar 27, 2001·Computer Methods in Biomechanics and Biomedical Engineering·T M Peters
Apr 27, 2001·Neurosurgery·A NabaviF A Jolesz
Oct 21, 2010·Acta Neurochirurgica. Supplement·Karl SchallerPhilippe Bijlenga
Jan 29, 2011·Neurosurgery·Yuichi MurayamaToshiaki Abe

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