Bio-Mechanical Model of the Brain for a Per-Operative Image-Guided Neuronavigator Compensating for "Brain-Shift" Deformations.

Marek Bucki (1) , Claudio Lobos (1) , Yohan Payan (2)

1 TIMC-IMAG - Techniques de l'Ingénierie Médicale et de la Complexité - Informatique, Mathématiques et Applications, Grenoble - UMR 5525
2 TIMC-IMAG-GMCAO - Gestes Medico-chirurgicaux Assistés par Ordinateur

In this paper we present a methodology to address the problem of brain tissue deformation referred to as 'brain-shift'. This deformation occurs throughout a neurosurgery intervention and strongly alters the accuracy of the neuronavigation systems used to date in clinical routine which rely solely on pre-operative patient imaging to locate the surgical target, such as a tumour or a functional area. After a general description of the framework of our intra-operative image-guided system, we describe a procedure to generate patient specific finite element meshes of the brain and propose a biomechanical model which can take into account tissue deformations and surgical procedures that modify the brain structure, like tumour or tissue resection.

Mots clés: Neurosurgery; brain shift; soft tissue modelling; mesh generation; MRI; ultrasonography

Domaines: Biomécanique [physics.med-ph]; Biomécanique [physics.med-ph]; Ingénierie biomédicale

Marek Bucki, Claudio Lobos, Yohan Payan. Bio-Mechanical Model of the Brain for a Per-Operative Image-Guided Neuronavigator Compensating for "Brain-Shift" Deformations.. Computer Methods in Biomechanics and Biomedical Engineering, 2007, Supplement 1, pp.25-26. ⟨10.1080/10255840701479057⟩. ⟨hal-00170010⟩