Method and magnetic resonance tomography apparatus for...

Details Method and magnetic resonance tomography apparatus for... Method and magnetic resonance tomography apparatus for...

2007-10-09

2007-10-09

Casler, Brian L (Department: 3737)

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

C324S307000, C600S410000, C600S407000

Reexamination Certificate

active

10105692

ABSTRACT:
A nuclear magnetic resonance tomography apparatus has gradient coils that superimpose at least one gradient field on a basic magnetic field transversely to a coding direction, with an overall magnetic field in the coding direction having a magnetic field strength with a component that changes quadratically over distance. A support mechanism displaces a subject to be measured by a distance Δw in the coding direction, and a control computer determines an absolute location w of a nuclear magnetic resonance signal in the coding direction from the resulting, quadratically dependent phase differences or resonant frequency differences during the displacement of the subject.

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patent: 6469505 (2002-10-01), Maier et al.
patent: 6509735 (2003-01-01), Mueller et al.
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patent: 6801034 (2004-10-01), Brittain et al.
patent: 2001/0048306 (2001-12-01), Mueller et al.
“Artifacts Induced by Concomitant Magnetic Field in Fast Spin-Echo Imaging,” Zhou et al. Magnetic Resonance in Medicine, vol. 40 (1998), pp. 582-591.

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