Crescent gradient coils

Details Crescent gradient coils Crescent gradient coils

1996-02-29

1999-03-23

Arana, Louis M.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

G01V 300

Patent

active

058865489

ABSTRACT:
A high-conductivity ceramic coil form with an internal water jacket is used to simplify water cooling for 3-axis MRI gradient coil configurations on a single cylindrical coilform. Crescent-shaped, axially aligned coils are symmetrically employed on either side of the axial symmetry plane to increase transversely the region of field linearity. These crescent coils may be used in conjunction with Golay-type coils for improved switching efficiency. Lead-filled copper tubing may be used to reduce acoustic noise from pulsed coils in high external magnetic fields.

REFERENCES:
patent: 2354331 (1944-07-01), Polydoroff
patent: 2498475 (1950-02-01), Adams
patent: 3237090 (1966-02-01), Royer et al.
patent: 3466499 (1969-09-01), Beth
patent: 3569823 (1971-03-01), Golay
patent: 3671902 (1972-06-01), Westendorp
patent: 3924211 (1975-12-01), Joffe et al.
patent: 4038622 (1977-07-01), Purcell
patent: 4165479 (1979-08-01), Mansfield
patent: 4514586 (1985-04-01), Waggoner
patent: 4642569 (1987-02-01), Hayes et al.
patent: 4646024 (1987-02-01), Schenck et al.
patent: 4646046 (1987-02-01), Vavrek et al.
patent: 4652824 (1987-03-01), Oppelt
patent: 4707663 (1987-11-01), Minkoff et al.
patent: 4733189 (1988-03-01), Punchard et al.
patent: 4737716 (1988-04-01), Roemer et al.
patent: 4766383 (1988-08-01), Fox et al.
patent: 4768008 (1988-08-01), Purcell et al.
patent: 4820988 (1989-04-01), Crooks et al.
patent: 4849697 (1989-07-01), Cline et al.
patent: 4876510 (1989-10-01), Siebold et al.
patent: 4885440 (1989-12-01), Snoddy et al.
patent: 4910462 (1990-03-01), Roemer et al.
patent: 4920011 (1990-04-01), Ogawa et al.
patent: 4926125 (1990-05-01), Roemer
patent: 4935714 (1990-06-01), Vermilyea
patent: 4954781 (1990-09-01), Hirata
patent: 4965521 (1990-10-01), Egloff
patent: 4978920 (1990-12-01), Mansfield
patent: 5036282 (1991-07-01), Morich et al.
patent: 5061891 (1991-10-01), Totsuka et al.
patent: 5084676 (1992-01-01), Saho et al.
patent: 5132618 (1992-07-01), Sugimoto
patent: 5132621 (1992-07-01), Kang et al.
patent: 5166619 (1992-11-01), Ries
patent: 5185577 (1993-02-01), Minemura
patent: 5198769 (1993-03-01), Frese et al.
patent: 5225782 (1993-07-01), Laskaris et al.
patent: 5235283 (1993-08-01), Lehne et al.
patent: 5278502 (1994-01-01), Laskaris et al.
patent: 5289128 (1994-02-01), DeMeester et al.
patent: 5296810 (1994-03-01), Morich
patent: 5349297 (1994-09-01), DeMeester et al.
patent: 5406204 (1995-04-01), Morich et al.
patent: 5424643 (1995-06-01), Morich et al.
patent: 5489848 (1996-02-01), Furukawa
patent: 5554929 (1996-09-01), Doty et al.
E.C. Wong et al., Magnetic Resonance in Medicine, vol. 21, 1 Sep. 1991, pp. 39-48.
V. Bangert et al., Journal of Physics E: Scientific Instuments, vol. 15, 1 Feb. 1982, pp. 235-239.
J.P. Boehmer et al., Journal of Magnetic Resonance, vol. 83, 1 Jun. 1989, pp. 152-159.
Y. Bangert and P. Mansfield, J. Physics E 15, "Magnetic Field Gradient Coils for NMR Imaging," 235 (1982).
P. Mansfield and B. Chapman, J. Magnetic Resonance 66, "Active Magnetic Screening of Gradient Coils in NMR Imaging," 573-576 (Feb. 1986).
P. Mansfield and B. Chapman, J. Magnetic Resonance 72, "Multishield Active Magnetic Screening of Coil Structures in NMR," 211 (1987).
M.K. Stehling, R. Turner, P. Mansfield, Science 254, "Echo-Planar Imaging: Magnetic Resonance Imaging in a Fraction of a Second," 43 (1991).

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