Non-invasive electromagnetic technique for monitoring time-trend

Details Non-invasive electromagnetic technique for monitoring time-trend Non-invasive electromagnetic technique for monitoring time-trend

1987-09-01

1989-04-11

Smith, Ruth S.

Surgery

Truss

Pad

128234, 324202, 324236, A61B 505

Patent

active

048196487

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. The apparatus and method has particular application in providing time-trend measurements of the process of brain edema associated with head trauma.

REFERENCES:
patent: 3723861 (1973-03-01), Samples
patent: 4458202 (1984-07-01), Nefedov et al.
patent: 4564810 (1986-01-01), Geithman et al.
patent: 4690149 (1987-09-01), Ko
patent: 4721113 (1988-01-01), Stewart et al.

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