Daniel J Engel

US Patent:

55571999, Sep 17, 1996

Filed:

Apr 29, 1994

Appl. No.:

8/235833

Inventors:

Joseph D. Bowman - Cincinnati OH
Daniel P. Engel - Cheviot OH

Assignee:

The United States of America as represented by the Department of Health
and Human Services - Washington DC

International Classification:

G01V 300

US Classification:

324301

Abstract:

A magnetic resonance monitor measures static and extremely low frequency magnetic fields in order to determine the degree of magnetic resonance with the magnetic moments of a biological substrate, more particularly resonance with the magnetic moments of a human body. A digital bandpass filter varies in response to the magnitude of the static magnetic field so that it selects frequencies of the oscillating magnetic field in accordance with the gyromagnetic equation. A spatial analyzer determines the three spatial components of the filtered signals representing the magnetic field oscillating parallel to the static magnetic field vector and the two circularly-polarized components rotating perpendicular to the static field with helicities opposite to each other. A resonance analyzer evaluates accurately the resonance yield which is the change in biochemical processes due to magnetic field exposures. The magnetic resonance monitor can measure from magnetic fields in residential and workplace environments, either for research studies or for the routine evaluations of health hazards.