Structural MRI-based predictions in patients with treatment-refractory depression (TRD)

Blair A. Johnston (Lead / Corresponding author), J. Douglas Steele, Serenella Tolomeo, David Christmas, Keith Matthews

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    Abstract

    The application of machine learning techniques to psychiatric neuroimaging offers the possibility to identify robust, reliable and objective disease biomarkers both within and between contemporary syndromal diagnoses that could guide routine clinical practice. The use of quantitative methods to identify psychiatric biomarkers is consequently important, particularly with a view to making predictions relevant to individual patients, rather than at a grouplevel. Here, we describe predictions of treatment-refractory depression (TRD) diagnosis using structural T1-weighted brain scans obtained from twenty adult participants with TRD and 21 never depressed controls. We report 85% accuracy of individual subject diagnostic prediction. Using an automated feature selection method, the major brain regions supporting this significant classification were in the caudate, insula, habenula and periventricular grey matter. It was not, however, possible to predict the degree of ‘treatment resistance’ in individual patients, at least as quantified by the Massachusetts General Hospital (MGH-S) clinical staging method; but the insula was again identified as a region of interest. Structural
    brain imaging data alone can be used to predict diagnostic status, but not MGH-S staging, with a high degree of accuracy in patients with TRD.
    Original languageEnglish
    Article number0132958
    Number of pages16
    JournalPLoS ONE
    Volume10
    Issue number7
    DOIs
    Publication statusPublished - 17 Jul 2015

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