Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation
Reexamination Certificate
2005-01-11
2005-01-11
Sykes, Angela D. (Department: 3737)
Surgery
Diagnostic testing
Detecting nuclear, electromagnetic, or ultrasonic radiation
C600S407000, C600S410000, C600S422000, C600S423000, C323S909000
Reexamination Certificate
active
06842637
ABSTRACT:
A magnetic field measurement apparatus includes a plurality of magnetometers each having SQUID's and three detection coils, one of which detects each of three orthogonal directional magnetic field components (Bx, By, Bz) of a magnetic field generated from a subject to be inspected, a display which displays time variation of waveforms of the magnitude (√(Bx2+By2+Bz2)) of magnetic field synthesized by square sum of each of the three orthogonal directional magnetic field components of the magnetic field generated from the subject to be inspected, a holder for holding a Dewar's vessel for arranging magnetometers therein, and a controller for controlling a positional relationship between the subject to be inspected and the Dewar's vessel. Accurate time variation of the magnetic field generated from the subject to be inspected can be detected without influence of positional change of the subject to be inspected, by simultaneously measuring each of the three orthogonal directional magnetic field components (Bx, By, Bz) of the magnetic field generated from current sources in the subject to be inspected.
REFERENCES:
patent: 4324255 (1982-04-01), Barach et al.
patent: 4793355 (1988-12-01), Crum et al.
patent: 4951674 (1990-08-01), Zanakis et al.
patent: 4995165 (1991-02-01), Daniels
patent: 4995395 (1991-02-01), Ilmoniemi et al.
patent: 5027819 (1991-07-01), Crum
patent: 5274582 (1993-12-01), Whitby
patent: 5291135 (1994-03-01), Hotta et al.
patent: 5471985 (1995-12-01), Warden
patent: 5644229 (1997-07-01), Dossel et al.
patent: 5657756 (1997-08-01), Vrba et al.
patent: 5752514 (1998-05-01), Okamura et al.
patent: 5755227 (1998-05-01), Tomita et al.
patent: 5880588 (1999-03-01), Kado
patent: 5894220 (1999-04-01), Wellstood et al.
patent: 2-116767 (1990-05-01), None
patent: 5-146416 (1993-06-01), None
patent: 05-196711 (1993-08-01), None
patent: 7-148131 (1995-06-01), None
patent: 08-071051 (1996-03-01), None
Review of Scientific Instruments, vol. 66, No. 10, Oct. 1995, “Multi-channel SQUID system detecting tangential components of the cardiac magnetic field”, K. Tsukada et al, pp. 5085-5091.
10th International Conference on Biomagnetism BIOMAG96, 1996, “A 129 Channel Vector Neuromagnetic Imaging System”, Y. Yoshida et al, p. 351.
Kandori Akihiko
Miyashita Tsuyoshi
Sasabuchi Hitoshi
Suzuki Hiroyuki
Tsukada Keiji
Jung William C.
Sykes Angela D.
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