Verification of the operation of a biomagnetometer
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United States of America Patent
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Jun 9, 1992
Grant Date -
N/A
app pub date -
Jul 26, 1990
filing date -
Jul 26, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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