DocumentCode :
2183859
Title :
Non rigid registration in neuroimaging: from a retrospective evaluation of global approaches to new advances in local and hybrid methods
Author :
Barillot, C. ; Hellier, Pierre ; Corouge, Isabelle
Author_Institution :
Vista Group, IRISA/INRIA, Rennes, France
fYear :
2002
fDate :
2002
Firstpage :
469
Lastpage :
472
Abstract :
Within the scope of three-dimensional brain imaging and brain functional mapping, we present a retrospective evaluation framework of inter-individual fusion scheme to register brain cortical anatomy and functional activations. The evaluation methodology relies on global and local criteria such as gray/white matter segmentation map overlap, correlation ratio of the mean Lvv intensities (i.e. 3D measure of the curvature of the cortex from the MRI volumes), distance and shape variation of cortical sulcal landmarks (segmented using the "active ribbon" approach). Visual and global measures seem to promote the non-linear global registration methods while local measures, based on sulci, did not show any significant differences between all global methods. As a perspective, new approaches are introduced to account for these local cortical deformations by means of either introducing sparse constraints in global registration methods or by introducing a local non-linear registration framework based on active shape models of local cortical features.
Keywords :
biomedical MRI; brain; image registration; image segmentation; medical image processing; MRI volumes; active ribbon approach; active shape models; correlation ratio; cortical sulcal landmarks; global approaches; gray/white matter segmentation map overlap; hybrid methods; local cortical deformations; local cortical features; local methods; magnetic resonance imaging; medical diagnostic imaging; nonrigid registration; retrospective evaluation; sulci; Active shape model; Anatomy; Brain; Data mining; Data visualization; Image segmentation; Magnetic resonance imaging; Neuroimaging; Shape measurement; Volume measurement;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Biomedical Imaging, 2002. Proceedings. 2002 IEEE International Symposium on
Print_ISBN :
0-7803-7584-X
Type :
conf
DOI :
10.1109/ISBI.2002.1029296
Filename :
1029296
Link To Document :
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