Learning large number of local statistical models via variational Bayesian inference for brain voxel classification in magnetic resonance images

科研成果: 书/报告/会议事项章节会议稿件同行评审

1 引用 (Scopus)

摘要

As an essential step in brain studies, measuring the distribution of major brain tissues, including gray matter, white matter and cerebrospinal fluid (CSF), using magnetic resonance imaging (MRI) has attracted extensive research efforts over the past years. Many brain tissue differentiation methods resulted from these efforts are based on the finite statistical mixture model, which however, in spite of its computational efficiency, is not strictly followed due to the intrinsically limited quality of MRI data and may lead to less accurate results. In this paper, a novel large-scale variational Bayesian inference (LS-VBI) learning algorithm is proposed for automated brain MRI voxels classification. To cope with the complexity and dynamic nature of MRI data, this algorithm uses a large number of local statistical models, in each of which all statistical parameters are assumed to be random variables sampled from conjugate prior distributions. Those models are learned using variational Bayesian inference and combined to predict the class label of each brain voxel. This algorithm has been evaluated against several state-of-the-art brain tissue segmentation methods on both synthetic and clinical brain MRI data sets. Our results show that the proposed algorithm can classify brain voxels more effectively and provide more precise distribution of major brain tissues.

源语言英语
主期刊名Proceedings 2014 IEEE International Conference on Security, Pattern Analysis, and Cybernetics, SPAC 2014
出版商Institute of Electrical and Electronics Engineers Inc.
59-64
页数6
ISBN(电子版)9781479953530
DOI
出版状态已出版 - 11 12月 2014
活动2014 IEEE International Conference on Security, Pattern Analysis, and Cybernetics, SPAC 2014 - Wuhan, Hubei, 中国
期限: 18 10月 201419 10月 2014

出版系列

姓名Proceedings 2014 IEEE International Conference on Security, Pattern Analysis, and Cybernetics, SPAC 2014

会议

会议2014 IEEE International Conference on Security, Pattern Analysis, and Cybernetics, SPAC 2014
国家/地区中国
Wuhan, Hubei
时期18/10/1419/10/14

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