Abstract #4948

Using fMRI to assess cerebrovascular reactivity after acute concussion

Nathan W Churchill¹, Michael Hutchison², Simon Graham³, and Tom Schweizer⁴

¹Neuroscience Research Program, St. Michael's Hospital, Toronto, ON, Canada, ²University of Toronto, Toronto, ON, Canada, ³Sunnybrook Hospital, Toronto, ON, Canada, ⁴St. Michael's Hospital, Toronto, ON, Canada

Cerebrovascular reactivity (CVR) is an important biomarker of concussion, as brain activity and blood flow regulation are often impaired after brain injury. This study examines an fMRI breath hold paradigm as a probe of CVR in concussed athletes, showing significant variations with days post-injury.

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