A combined voxel and surface based method for topology correction of brain surfaces

Gris, Florence, Favreau, Jean-Marie, Acosta, Oscar, Barra, Vincent and Salvado, Olivier (2010). A combined voxel and surface based method for topology correction of brain surfaces. In: Progress in Biomedical Optics and Imaging: Proceedings of SPIE, Volume 7623. Conference on Medical Imaging 2010 - Image Processing, San Diego, CA, United States, (76234T-1-76234T-12). 14-16 February 2010.


Author Gris, Florence
Favreau, Jean-Marie
Acosta, Oscar
Barra, Vincent
Salvado, Olivier
Title of paper A combined voxel and surface based method for topology correction of brain surfaces
Conference name Conference on Medical Imaging 2010 - Image Processing
Conference location San Diego, CA, United States
Conference dates 14-16 February 2010
Proceedings title Progress in Biomedical Optics and Imaging: Proceedings of SPIE, Volume 7623   Check publisher's open access policy
Journal name Medical Imaging 2010: Image Processing   Check publisher's open access policy
Place of Publication Bellingham, WA, United States
Publisher SPIE
Publication Year 2010
Sub-type Poster
DOI 10.1117/12.844624
ISBN 9780819480248
ISSN 0277-786X
Volume 7623
Issue Part 1
Start page 76234T-1
End page 76234T-12
Total pages 12
Language eng
Abstract/Summary Brain surfaces provide a reliable representation for cortical mapping. The construction of correct surfaces from magnetic resonance images (MRI) segmentation is a challenging task, especially when genus zero surfaces are required for further processing such as parameterization, partial inflation and registration. The generation of such surfaces has been approached either by correcting a binary image as part of the segmentation pipeline or by modifying the mesh representing the surface. During this task, the preservation of the structure may be compromised because of the convoluted nature of the brain and noisy/imperfect segmentations. In this paper, we propose a combined, voxel and surfacebased, topology correction method which preserves the structure of the brain while yielding genus zero surfaces. The topology of the binary segmentation is first corrected using a set of topology preserving operators applied sequentially. This results in a white matter/gray matter binary set with correct sulci delineation, homotopic to a filled sphere. Using the corrected segmentation, a marching cubes mesh is then generated and the tunnels and handles resulting from the meshing are finally removed with an algorithm based on the detection of nonseparating loops. The approach was validated using 20 young individuals MRI from the OASIS database, acquired at two different time-points. Reproducibility and robustness were evaluated using global and local criteria such as surface area, curvature and point to point distance. Results demonstrated the method capability to produce genus zero meshes while preserving geometry, two fundamental properties for reliable and accurate cortical mapping and further clinical studies.
Q-Index Code EX
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Poster session: "Shape". Article number 76234T. Progress in Biomedical Optics and Imaging (1605-7422) Vol. 11, No. 33

 
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