Jan 18, 2018

Behavioral interventions for reducing head motion during MRI scans in children

NeuroImage
Deanna J GreeneNico U F Dosenbach

Abstract

A major limitation to structural and functional MRI (fMRI) scans is their susceptibility to head motion artifacts. Even submillimeter movements can systematically distort functional connectivity, morphometric, and diffusion imaging results. In patient care, sedation is often used to minimize head motion, but it incurs increased costs and risks. In research settings, sedation is typically not an ethical option. Therefore, safe methods that reduce head motion are critical for improving MRI quality, especially in high movement individuals such as children and neuropsychiatric patients. We investigated the effects of (1) viewing movies and (2) receiving real-time visual feedback about head movement in 24 children (5-15 years old). Children completed fMRI scans during which they viewed a fixation cross (i.e., rest) or a cartoon movie clip, and during some of the scans they also received real-time visual feedback about head motion. Head motion was significantly reduced during movie watching compared to rest and when receiving feedback compared to receiving no feedback. However, these results depended on age, such that the effects were largely driven by the younger children. Children older than 10 years showed no significant benefit. ...Continue Reading

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Mentioned in this Paper

Sensorimotor Feedback
Research
Magnetic Resonance Imaging
Sample Fixation
Patient Care
Self-Perception
Morphologic Artifacts
Head Neoplasms
Clip
Clinical Investigators

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