Regionally discriminative multivariate statistical mapping

Erdem Varol, Aristeidis Sotiras, Christos Davatzikos

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


    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 (US)
    Title of host publication2018 IEEE 15th International Symposium on Biomedical Imaging, ISBI 2018
    PublisherIEEE Computer Society
    Number of pages4
    ISBN (Electronic)9781538636367
    StatePublished - May 23 2018
    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
    ISSN (Print)1945-7928
    ISSN (Electronic)1945-8452


    Other15th IEEE International Symposium on Biomedical Imaging, ISBI 2018
    Country/TerritoryUnited States

    ASJC Scopus subject areas

    • Biomedical Engineering
    • Radiology Nuclear Medicine and imaging


    Dive into the research topics of 'Regionally discriminative multivariate statistical mapping'. Together they form a unique fingerprint.

    Cite this