"A challenge with concussion assessment is the reliance upon subjective symptoms rather than objective measures based on physiological changes," he noted. Accordingly, it can be challenging to pinpoint the exact areas that are susceptible to damaging winds using an operational Doppler radar. around the region are volunteering their time to help flood victims through the appeal process. is the official website for WWL-TV, your trusted source for breaking news, weather and sports in New Orleans, LA.
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"While such changes may be detected with MRI, we believe there may be a less expensive and portable way to measure these changes with a transcranial Doppler device."
"There is growing evidence that concussions can change the blood flow in the brain," Hamilton said in a press statement. In comparison, traditional transcranial ultrasound that measured cerebral blood flow was only about 60% accurate in diagnosing concussion, he reported in an emerging science presentation at the American Academy of Neurology annual meeting. The imaging studies were able to differentiate between healthy and concussed athletes 83% of the time, reported Robert Hamilton, PhD, of Neural Analytics in Los Angeles, and colleagues.