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- W6106565 abstract "L'utilisation croissante de systemes de navigation pour l'aide a la chirurgie a permis de faciliter les interventions ainsi que la planification des gestes chirurgicaux. Neanmoins, dans le cas de la neurochirurgie ou le geste operatoire doit etre tres precis, les systemes actuels sont limites a cause de deformations per-operatoires nommees ``Brain Shift''. Le terme de 'Brain Shift' traduit le mouvement des structures cerebrales arrivant apres ouverture de la boite crânienne (jusqu'a 25mm). Le recalage rigide realise par le systeme de neuronavigation entre les examens preoperatoires et la position du patient en salle d'operation est donc entache d'une imprecision. Ainsi, les informations fournies par le systeme de navigation deviennent partiellement obsoletes. Ce document propose une presentation des differentes techniques de mesure et de compensation du 'Brain Shift'. Les avantages et inconvenients de chaque approche seront soulignes avant de conclure par une breve presentation des methodes de validation existantes. / Navigation systems become a very attractive tool in surgical planning and procedure. However, the accuracy and usefulness of such systems is limited in presence of soft-tissue deformations. In neurosurgery, this phenomenon is called ``Brain Shift''. The ``Brain shift'' is the motion of cerebral structures occurring after the craniotomy (up to 25mm). The neuronavigation system matches rigidly the pre-operative images with the surgical field. The hypothesis of a rigid registration is no longer valid because of deformations. This document presents a survey with classification of published methods to measure and compensate for the brain shift. The various validation framework are also presented." @default.
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- W6106565 date "2005-01-01" @default.
- W6106565 modified "2023-09-23" @default.
- W6106565 title "État de l'art des méthodes de correction des déformations cérébrales per-opératoires" @default.
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