Article (Scientific journals)
Serial FEM/XFEM-Based Update of Preoperative Brain Images Using Intraoperative MRI
Vigneron, Lara; Noels, Ludovic; Warfield, Simon et al.
2012In International Journal of Biomedical Imaging, 2012, p. 872783, 17
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Keywords :
Nonrigid registration; intraoperative MR; brain shift; resection; FEM; XFEM; biomechanical model
Abstract :
[en] Current neuronavigation systems cannot adapt to changing intraoperative conditions over time. To overcome this limitation, we present an experimental end-to-end system capable of updating 3D preoperative images in the presence of brain shift and successive resections. The heart of our system is a nonrigid registration technique using a biomechanical model, driven by the deformations of key surfaces tracked in successive intraoperative images. The biomechanical model is deformed using FEM or XFEM, depending on the type of deformation under consideration, namely brain shift or resection. We describe the operation of our system on two patient cases, each comprising ¯ve intraoperative MR images, and demonstrate that our approach significantly improves the alignment of nonrigidly registered images.
Disciplines :
Laboratory medicine & medical technology
Engineering, computing & technology: Multidisciplinary, general & others
Mechanical engineering
Author, co-author :
Vigneron, Lara
Noels, Ludovic  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Computational & Multiscale Mechanics of Materials (CM3)
Warfield, Simon;  Harvard Medical School, Harvard Medical School > Computational Radiology Laboratory
Verly, Jacques ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Exploitation des signaux et images
Robe, Pierre ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Département des sciences biomédicales et précliniques
Language :
English
Title :
Serial FEM/XFEM-Based Update of Preoperative Brain Images Using Intraoperative MRI
Publication date :
January 2012
Journal title :
International Journal of Biomedical Imaging
ISSN :
1687-4188
eISSN :
1687-4196
Publisher :
Hindawi Publishing Corporation
Volume :
2012
Pages :
ID 872783, 17 pages
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 16 November 2011

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