Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Patent
1991-08-12
1993-02-09
Tokar, Michael J.
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
335299, G01R 3320
Patent
active
051855763
ABSTRACT:
A compact local gradient coil is combined with a local RF coil to provide lower powered, higher strength gradient fields and faster gradient response as is useful in magnetic resonance imaging. Interference between the RF coil and gradient coil is minimized by placement of the gradient coil external to the RF coil and by gradient coils that are axially symmetric and/or have conductors substantially orthogonal to the RF coil conductors. Acoustic noise in these smaller, stronger coils is reduced with ports cut into the coil forms.
REFERENCES:
patent: 4978920 (1990-12-01), Mansfield et al.
patent: 5036282 (1991-07-01), Morich et al.
patent: 5146197 (1992-09-01), Lowe
"Echo-Planar Imaging of Diffusion and Perfuson: Magnetic Resonance in Medicine 19", 247-253 (1991), Robert Turner, et al.
"Echo-Planar Imaging of Intravoxel Incoherent Motion", Radiology 1990, vol. 177, No. 2, Nov. 1990, Robert Turner PhD. et al.
"Single Shot Echo-Planar Imaging" (admitted prior art from poster presented at 1989 SMRM conference).
McFarland Thomas G.
Myers Christopher C.
Schaefer Daniel J.
Turner Robert
Vavrek Robert M.
General Electric Company
The United States of America as represented by the Secretary of
Tokar Michael J.
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