Abstract #2209
The Impact of 3-ply and KN95 Facemasks on Cerebral Blood Flow and Oxygenation
Aisling Fothergill1,2,3, Christoph Birkl1,4, Christian Kames1,2, Alexander Weber1, and Alexander Rauscher1,2,5
1UBC MRI Research Centre, University of British Columbia, Vancouver, BC, Canada, 2Department of Physics and Astronomy, University of British Columbia, Vancouver, BC, Canada, 3Geoffrey Jefferson Brain Research Centre, Division of Neuroscience and Experimental Psychology, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom, 4Department of Neuroradiology, Medical University of Innsbruck, Innsbruck, Austria, 5Department of Pediatrics, Division of Neurology, University of British Columbia, Vancouver, BC, Canada
Synopsis
Given the increased use of facemasks in everyday life, the impacts of these masks on cerebral blood flow (CBF) and oxygenation needs to be investigated. This study used pseudo-continuous arterial spin labeling (pCASL) and quantitative susceptibility mapping (QSM) to determine changes to grey matter CBF and oxygenation respectively. This was done by comparing facemask and no facemask scans for both 3-ply and KN95 masks. The average percent change between the facemask and no facemask oxygenation/susceptibility were insignificant for both mask types, and only the 3-ply facemask showed a statistically significant increase of 5.5% in CBF when wearing the facemask.
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