Verification of the operation of a biomagnetometer

Details Verification of the operation of a biomagnetometer Verification of the operation of a biomagnetometer

1990-07-26

1992-06-09

Wieder, Kenneth A.

Electricity: measuring and testing

Magnetic

Calibration

324300, G01R 3500

Patent

active

051210550

ABSTRACT:
The operation of a biomagnetometer is verified using a tool containing a dipole source of known strength having a fixed, known position. The tool includes a hollow nonconducting and nonmagnetic sphere filled with an electrically conducting fluid, and at least one well-characterized dipole source within the fluid. The position of the dipole source relative to fixed locations on the surface of the sphere is established by X-ray measurement, and the the fixed surface locations and strength of the dipole source are measured with the biomagnetometer. The position and strength of the dipole source determined in this manner are compared with the known position and strength of the dipole source, to verify the operation of the biomagnetometer.

REFERENCES:
patent: 3557777 (1971-01-01), Cohen
patent: 3980076 (1976-09-01), Wikswo, Jr. et al.
patent: 4079730 (1978-03-01), Wikswo, Jr. et al.
patent: 4386361 (1983-05-01), Simmonds
patent: 4403189 (1983-09-01), Simmonds
patent: 4751464 (1988-06-01), Bridges
patent: 4793355 (1988-12-01), Crum et al.

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