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Fast, Sequence Adaptive Parcellation of Brain MR Using Parametric Models
Oula Puonti1, Juan Eugenio Iglesias2, and Koen Van Leemput1, 2, 3
1Department of Applied Mathematics and Computer Science, Technical University of Denmark, Denmark
2Martinos Center for Biomedical Imaging, MGH, Harvard Medical School, USA
3Departments of Information and Computer Science and of Biomedical Engineering and Computational Science, Aalto University, Finland
Abstract. In this paper we propose a method for whole brain parcellation using the type of generative parametric models typically used in tissue classification. Compared to the non-parametric, multi-atlas segmentation techniques that have become popular in recent years, our method obtains state-of-the-art segmentation performance in both cortical and subcortical structures, while retaining all the benefits of generative parametric models, including high computational speed, automatic adaptiveness to changes in image contrast when different scanner platforms and pulse sequences are used, and the ability to handle multi-contrast (vector-valued intensities) MR data. We have validated our method by comparing its segmentations to manual delineations both within and across scanner platforms and pulse sequences, and show preliminary results on multi-contrast test-retest scans, demonstrating the feasibility of the approach.
LNCS 8149, p. 727 ff.
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© Springer-Verlag Berlin Heidelberg 2013