Assessment and prevention of head motion during imaging of patients with attention deficit hyperactivity disorder - PubMed (original) (raw)

. 2007 May 15;155(1):75-82.

doi: 10.1016/j.pscychresns.2006.12.009. Epub 2007 Mar 28.

B J Casey, Simon T Tonev, Matthew Davidson, Allan L Reiss, Amy Garrett, Stephen P Hinshaw, Laurence L Greenhill, Alan Vitolo, Lisa A Kotler, Matthew A Jarrett, Julie Spicer

Affiliations

Assessment and prevention of head motion during imaging of patients with attention deficit hyperactivity disorder

Jeffery N Epstein et al. Psychiatry Res. 2007.

Abstract

The present study serves to detail the specific procedures for a mock scanner protocol, report on its use in the context of a multi-site study, and make suggestions for improving such protocols based on data acquired during study scanning. Specifically, a mock scanner compliance training protocol was used in a functional imaging study with a group of adolescents and adults with Attention Deficit Hyperactivity Disorder (ADHD) and a matched sample of healthy children and adults. Head motion was measured during mock and actual scanning. Participants across groups exhibited excess motion (>2 mm) on 43% of runs during the mock scanner. During actual scanning, excessive motion was limited to 10% of runs. There was a clear task-correlated head motion during a go/no-go task that occurred even after the compliance training: participants had a tendency to respond with increased head motion immediately after committing an error. This study illustrates the need to (1) report data attrition due to head motion, (2) assess task-related motion, and (3) consider mock scanner training in functional imaging protocols.

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Figures

Figure 1

Figure 1

Graphical depiction of head motion occurring after the presentation of a no-go stimulus (time t) and an error response. Parents and children, irregardless of ADHD status, seem to demonstrate increased head motion immediately after making an error.

References

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