Magnetic resonance methods

Details Magnetic resonance methods Magnetic resonance methods

1989-12-26

1991-05-14

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

G01R 3320

Patent

active

050159550

ABSTRACT:
A method of reducing the effects of eddy currents produced by a gradient magnetic field pulse pattern applied to a body in a magnetic resonance method by selecting the rates of change of magnetic flux produced during the edges of the or each pulse of the pulse pattern in relation to the times elapsing between the edges and the time constants of the eddy currents.

REFERENCES:
patent: 4315216 (1982-02-01), Clow et al.
patent: 4680547 (1987-07-01), Leue
patent: 4698591 (1987-10-01), Glover
patent: 4920316 (1990-04-01), Egloff
patent: 4950994 (1990-08-01), Glover
patent: 4965521 (1990-10-01), Egloff
Mansfield et al.; "Active Magnetic Screening of Gradient Coils in NMR Imaging", Journal of Magnetic Resonance; 66, 573-576 (1986).
Roemer et al.; "Self Shielded Gradient Coils", Proceedings of 5th Annual Meeting of Society of Magnetic Resonance in Medicine, Montreal, 1067-1068.

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