María Jimena Costa
Ph.D. in Computer Science - Medical Image Processing
Automatic Segmentation of Bladder and Prostate Using Coupled 3D Deformable Models.
Costa J., Delingette H., Novellas S. and Ayache N.
Accepted for publication in MICCAI 2007
In this paper, we propose a fully automatic method for the coupled 3D localization and segmentation of lower abdomen structures. We apply it to the joint segmentation of the prostate and bladder in a database of CT scans of the lower abdomen of male patients. A flexible approach on the bladder allows the process to easily adapt to high shape variation and to intensity inhomogeneities that would be hard to characterize (due, for example, to the level of contrast agent that is present). On the other hand, a statistical shape prior is enforced on the prostate. We also propose an adaptive non--overlapping constraint that arbitrates the evolution of both structures based on the availability of strong image data at their common boundary. The method has been tested on a database of 16 volumetric images, and the validation process includes an assessment of inter-expert variability in prostate delineation, with promising results.
Publications
Segmentation of Anatomical Structures of the Lower Abdomen using 3D Deformable Surfaces.
Costa, J.Ph.D. Thesis, March 2008
An Efficient Locally Affine Framework for the Smooth Registration of Anatomical Structures.
Commowick O., Arsigny V., Isambert A., Costa J., et al.Medical Image Analysis 2008
Automatic Segmentation of Bladder and Prostate Using Coupled 3D Deformable Models.
Costa J., et al.MICCAI 2007
Automatic Segmentation of the Bladder Using Deformable Models.
Costa, J., et al.ISBI 2007
An Efficient Locally Affine Framework for the Registration of Anatomical Structures.
Commowick O., Arsigny V., Costa J., Ayache N. and Malandain G.ISBI 2006
Towards an automatic delineation of lower abdomen structures for conformational radiotherapy based on CT images.
Costa J., et al.SFPM 2005.
Distributed Ontological Encoding Through Symbol Recirculation.
Costa J., Duboue P.ASAI 2004.
