Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Patent
1983-11-02
1987-02-24
Kreittman, Stephen A.
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
324319, 324307, G01R 3308
Patent
active
046460241
ABSTRACT:
In the production of nuclear magnetic resonance images, it is necessary to provide various magnetic fields with specified orientations and configurations in particular relationships with respect to a cylindrical coil form on which the RF and gradient coils are generally disposed. In particular, it is necessary to produce so-called transverse gradient fields which are oriented transversely with respect to the cylindrical form. It is necessary to produce a component parallel to the axis of the cylinder, but which component varies linearly in intensity in the direction transverse to the axis. That is to say, it is desirable to produce a magnetic field component within the cylinder such that surfaces on which this component is constant are parallel and are generally oriented parallel to the axis of the cylinder. Furthermore, for the purpose of providing proper spatial definition and resolution, it is necessary that this transverse field exhibit a highly linear variation in intensity inside the cylinder. In a nuclear magnetic resonance imaging system, two such coil sets are required and are oriented at right angles to one another so as to generate x-axis and y-axis positioning information. The present invention describes coil winding patterns which are capable of producing such transverse gradient magnetic fields with an exceedingly high degree of linearity.
REFERENCES:
patent: 3622869 (1971-11-01), Golay
patent: 3769698 (1973-11-01), Lademann et al.
patent: 4165479 (1979-08-01), Mansfield
patent: 4361807 (1982-11-01), Burl
patent: 4456881 (1984-06-01), Compton
patent: 4475084 (1984-10-01), Moore
patent: 4480228 (1984-10-01), Bottomley
patent: 4486711 (1984-12-01), Frese et al.
Selective Excitation in NMR and Considerations for its Application in Three-Dimensional Imaging; R. J. Sutherland, 1980 Thesis Presented for Ph.D. at University of Aberdeen.
Edelstein William A.
Hussain Moayyed A.
Schenck John F.
Cutter Lawrence D.
Davis Jr. James C.
General Electric Company
Kreittman Stephen A.
Oldham Scott M.
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