​Study Finds Concussion Reduces Blood Flow to the Brain
A study presented by the Radiological Society of North America (RSNA) has shown that athletes who have suffered sports-related concussions demonstrate reduced blood flow to the brain.
(firmenpresse) - A study presented by the Radiological Society of North America (RSNA) has shown that athletes who have suffered sports-related concussions demonstrate reduced blood flow to the brain. Researchers from the Medical College of Wisconsin used an advanced MRI method which detects blood flow in the brain through arterial spin labeling.
The results of the study reinforced the need for MRI testing before allowing athletes to return to competition after experiencing a concussion.
Yang Wang, M.D., PhD., author of the study, said €œThis measurement of blood flow is fully noninvasive, without radiation exposure, we use arterial blood water as a contrast tracer to measure blood flow change, which is highly associated with brain function.
Millions of people suffer concussions every year, particularly those who compete in contact sports such as football. According the National Institutes of Health, vehicle crashes are the leading cause of brain trauma in people 15-24 years of age, followed by sports.
To date, the decision to allow athletes who suffered concussion to return to their sport has been based on cognitive and neurological testing, along with symptoms that were displayed.
The study by Dr. Wang and fellow researchers included 18 players who had suffered concussion, along with 19 players without concussion. MRI''s were performed on the concussed players in the 24 hours following injury, with a follow-up MRI eight days later.
The MRI results on the players with concussion showed a significant decrease in blood flow eight days post-injury, while the MRI results on the payers who had not experienced concussion showed no change in blood flow in the brain within the same period.
"In eight days, the concussed athletes showed clinical recovery," Dr. Wang said. "However, MRI showed that even those in clinical recovery still had neurophysiological abnormalities. Neurons under such a state of physiologic stress function abnormally and may become more susceptible to second injury."
These findings may have major impact on determining whether players should return to play after head injuries, according to Michael McCrea, Ph.D., professor of neurosurgery and director of brain injury research at the Medical College of Wisconsin.
"The nature of this research allows us to study the mechanisms of injury and recovery directly in humans rather than in animal models," Dr. McCrea said. "Our ultimate aim is to better understand the time course of neurobiological recovery after concussion."
The Medical College of Wisconsin researchers are continuing to study ways to improve treatment for traumatic brain injuries and speed diagnosis of concussion in athletes.
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Datum: 02.12.2015 - 11:22 Uhr
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