Neurobiological support to the diagnosis of ADHD in stimulant-naïve adults: pattern recognition analyses of MRI data

T. M. Chaim-Avancini, J. Doshi, M. V. Zanetti, G. Erus, M. A. Silva, F. L.S. Duran, M. Cavallet, M. H. Serpa, S. C. Caetano, M. R. Louza, C. Davatzikos, G. F. Busatto

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: In adulthood, the diagnosis of attention-deficit/hyperactivity disorder (ADHD) has been subject of recent controversy. We searched for a neuroanatomical signature associated with ADHD spectrum symptoms in adults by applying, for the first time, machine learning-based pattern classification methods to structural MRI and diffusion tensor imaging (DTI) data obtained from stimulant-naïve adults with childhood-onset ADHD and healthy controls (HC). Method: Sixty-seven ADHD patients and 66 HC underwent high-resolution T1-weighted and DTI acquisitions. A support vector machine (SVM) classifier with a non-linear kernel was applied on multimodal image features extracted on regions of interest placed across the whole brain. Results: The discrimination between a mixed-gender ADHD subgroup and individually matched HC (n = 58 each) yielded area-under-the-curve (AUC) and diagnostic accuracy (DA) values of up to 0.71% and 66% (P = 0.003) respectively. AUC and DA values increased to 0.74% and 74% (P = 0.0001) when analyses were restricted to males (52 ADHD vs. 44 HC). Conclusion: Introvert personality traits showed independent risk effects on suicidality regardless of diagnosis status. Among high risk individuals with suicidal thoughts, higher neuroticism tendency is further associated with increased risk of suicide attempt.

Original languageEnglish (US)
Pages (from-to)623-636
Number of pages14
JournalActa Psychiatrica Scandinavica
Volume136
Issue number6
DOIs
StatePublished - Dec 2017

Keywords

  • adults
  • attention-deficit/hyperactivity disorder
  • diffusion tensor imaging
  • machine learning-based methods
  • structural MRI

ASJC Scopus subject areas

  • Psychiatry and Mental health

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