Regionally discriminative multivariate statistical mapping

Erdem Varol, Aristeidis Sotiras, Christos Davatzikos

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Statistical mapping of normative or pathological changes in the brain is of utmost importance for our understanding of its structure and function. Mass-univariate as well as multivariate pattern analysis techniques have been proposed to map group differences in neuroimaging studies. However, these methods often suffer from low sensitivity and specificity, as well as high computational cost. To address these limitations, we introduce a novel multivariate statistical framework, termed MIDAS, aiming to efficiently produce highly sensitive and specific statistical brain maps. MIDAS utilizes localized discriminative learning to produce a statistic whose significance can be assessed by analytic approximation of permutation testing. Discriminative learning allows for finding the optimal adaptive filtering of the image for group analysis. The null distribution of the resulting statistic is analytically approximated, which provides computational efficiency. MIDAS is extensively validated using simulated atrophy on structural magnetic resonance images of 200 healthy subjects. Furthermore, the applicability of MIDAS to clinical studies is confirmed by applying it to an Alzheimer's disease (AD) dataset (ADNI) comprising 199 AD patients and 230 controls.

Original languageEnglish
Title of host publication2018 IEEE 15th International Symposium on Biomedical Imaging, ISBI 2018
PublisherIEEE Computer Society
Pages1560-1563
Number of pages4
ISBN (Electronic)9781538636367
DOIs
StatePublished - May 23 2018
Externally publishedYes
Event15th IEEE International Symposium on Biomedical Imaging, ISBI 2018 - Washington, United States
Duration: Apr 4 2018Apr 7 2018

Publication series

NameProceedings - International Symposium on Biomedical Imaging
Volume2018-April
ISSN (Print)1945-7928
ISSN (Electronic)1945-8452

Conference

Conference15th IEEE International Symposium on Biomedical Imaging, ISBI 2018
CountryUnited States
CityWashington
Period04/4/1804/7/18

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  • Cite this

    Varol, E., Sotiras, A., & Davatzikos, C. (2018). Regionally discriminative multivariate statistical mapping. In 2018 IEEE 15th International Symposium on Biomedical Imaging, ISBI 2018 (pp. 1560-1563). (Proceedings - International Symposium on Biomedical Imaging; Vol. 2018-April). IEEE Computer Society. https://doi.org/10.1109/ISBI.2018.8363871