Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Patent
1988-08-19
1990-04-17
Williams, Hezron E.
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
128653R, G01R 3320
Patent
active
049183885
ABSTRACT:
A thin dielectric sheet (36) has a first or loop coil (30) defined on one surface thereof and a second or Helmholtz coil (32) defined on an obverse surface thereof. The dielectric sheet and associated coils may be laid flat (FIG. 3) or bent to match a selected curved surface of the subject (FIGS. 6-8). The first and second coils are arranged symmetrically about an axis or plane of symmetry (34). The first coil has an associated magnetic field along a y-axis and the second coil has an associated magnetic field along the x-axis. Circuits (40 and (42) tune the first and second magnetic resonance coils to a preselected magnetic resonance frequency. Magnetic resonance signals of the selected frequency received by one of the coils are phase shifted 90.degree. by a phase shifting circuit (50) and combined with the unphase shifted signals from the other coil by a combining circuit (52). The combined signals are amplified (54) and conveyed to electronic image processing circuitry (E) of a magnetic resonance scanner.
REFERENCES:
patent: 4297637 (1981-10-01), Crooks et al.
patent: 4617936 (1986-10-01), Malko
patent: 4620155 (1986-10-01), Edelstein
patent: 4623864 (1986-11-01), Inoue et al.
patent: 4636730 (1987-01-01), Bottomley
patent: 4638253 (1987-01-01), Jaskolski et al.
patent: 4680549 (1987-07-01), Tanttu
patent: 4707662 (1987-11-01), Kenner et al.
patent: 4712069 (1987-12-01), Kemner et al.
patent: 4714887 (1987-12-01), Meissner et al.
patent: 4718431 (1988-01-01), Hartl et al.
patent: 4721913 (1988-01-01), Hyde et al.
patent: 4725779 (1988-02-01), Hyde et al.
patent: 4733190 (1988-03-01), Dembinski
patent: 4734647 (1988-03-01), Yoshimura
patent: 4739269 (1988-04-01), Kopp
patent: 4746866 (1988-05-01), Roschmann
patent: 4751465 (1988-06-01), Zens
patent: 4752736 (1988-06-01), Arakawa et al.
patent: 4816765 (1989-03-01), Boskamp
patent: 4839595 (1989-06-01), Boskamp
Holland G. Neil
Mehdizadeh Mehrdad
Molyneaux David A.
O'Shea Kevin D.
Picker International Inc.
Williams Hezron E.
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