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Hybridizing EMD with cICA for fMRI Analysis of Patient Groups

  • Independent component analysis (ICA), as a data driven method, has shown to be a powerful tool for functional magnetic resonance imaging (fMRI) data analysis. One drawback of this multivariate approach is, that it is naturally not convenient for analysis of group studies. Therefore various techniques have been proposed in order to overcome this limitation of ICA. In this paper a novel ICA based work-flow for extracting resting state networks from fMRI group studies is proposed. An empirical mode decomposition (EMD) is used to generate reference signals in a data driven manner, which can be incorporated into a constrained version of ICA (cICA), what helps to overcome the inherent ambiguities. The results of the proposed workflow are then compared to those obtained by a widely used group ICA approach. It is demonstrated that intrinsic modes, extracted by EMD, are suitable to serve as references for cICA to obtain typical resting state patterns, which are consistent over subjects. This novel processing pipeline makes it transparent for the user, how comparable activity patterns across subjects emerge, and also the trade-off between similarity across subjects and preserving individual features can be well adjusted and adapted for different requirements in the new work-flow.

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Metadaten
Author:S. Wein, Ana Maria ToméORCiD, Markus GoldhackerORCiD, Mark W. GreenleeORCiD, Elmar Wolfgang LangORCiD
DOI:https://doi.org/10.1109/EMBC.2019.8856355
Pubmed Id:https://pubmed.ncbi.nlm.nih.gov/31945876
Parent Title (English):2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC): 23-27 July 2019, Berlin, Germany
Publisher:IEEE
Document Type:conference proceeding (article)
Language:English
Year of first Publication:2019
Release Date:2022/08/11
Tag:biomedical MRI; data analysis; independent component analysis; medical image processing
First Page:194
Last Page:197
Institutes:Fakultät Maschinenbau
Begutachtungsstatus:peer-reviewed
Publication:Externe Publikationen
research focus:Digitalisierung
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG