Non-invasive electromagnetic technique for monitoring physiological changes in the brain
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United States of America Patent
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Sep 1, 1987
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N/A
app pub date -
Oct 28, 1985
filing date -
Oct 28, 1985
priority date (Note) -
Expired
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Abstract
An apparatus and method for non-invasively sensing physiological changes in the brain is disclosed. The apparatus and method uses an electromagnetic field to measure localized impedance changes in brain matter and fluid. Various spatial and temporal techniques are used to localize impedance changes in the brain. The apparatus and method has particular application in locating and providing time-trend measurements of the process of brain edema or the process of hydrocephalus.
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