Biomagnetism measuring method and apparatus

Details Biomagnetism measuring method and apparatus Biomagnetism measuring method and apparatus

1996-08-15

1998-05-19

Lateef, Marvin M.

Surgery

Truss

Pad

324244, 324248, 324260, 128731, A61B 505

Patent

active

057525145

ABSTRACT:
A biomagnetism measuring method and apparatus for determining a positional relationship of an examinee with fluxmeters in a short time. A current supply unit simultaneously supplies alternating currents of different frequencies to a plurality of oscillator coils attached to the examinee, respectively. The fluxmeters detect magnetic fields simultaneously formed by the oscillator coils supplied with the currents. Field data thereby obtained are applied through a data collecting unit to a field analyzer for frequency analysis to recognize field strengths due to the respective oscillator coils for the respective fluxmeters. The field analyzer computes positions of the oscillator coils relative to the fluxmeters from the field strengths recognized for the respective oscillator coils and known values of the currents supplied to the respective oscillator coils. Based on this positional information, information indicative of positions of bioelectric current sources measured in a separate process is displayed as superposed on an MRI image of a site of interest of the examinee.

REFERENCES:
patent: 5361774 (1994-11-01), Yamazaki et al.
patent: 5437276 (1995-08-01), Takada
patent: 5601081 (1997-02-01), Tomida et al.

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