Mild traumatic brain injury (mTBI), including sport-related concussion, is a major health issue. Changes in cerebral blood flow (CBF) following concussion, as measured by arterial spin labeling (ASL) MRI, may potentially be an indicator of injury or recovery. Compared to healthy controls, we found that CBF was significantly decreased in recently concussed youth ( within 14 days post-injury) within the regions of the occipital and parietal lobes, including the right precuneus. For these regions, CBF of recovered youth was greater than recently concussed and less than controls, though not significantly different from either group.
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