UC Berkeley researchers have
developed a device that uses wireless signals to provide real-time,
non-invasive diagnoses of brain swelling or bleeding. The device’s diagnoses
for the brain trauma patients in the study matched the results obtained from
conventional computerized tomography (CT) scans. Because fluid conducts
electricity differently than brain tissue, it is possible to measure changes in
electromagnetic properties. The tests also revealed some insights into the
aging brain. With increased age, the average electromagnetic transmission
signature of a normal human brain changes and approaches that of younger
patients with a severe medical condition of hematoma in the brain. For brain
hematomas, internal bleeding causes the buildup of blood in specific regions of
the brain. For brain edemas, on the other hand, swelling results from an
increase in fluid in the tissue.
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