Method for sensing nuclear magnetic resonance signals given arbi

Details Method for sensing nuclear magnetic resonance signals given arbi Method for sensing nuclear magnetic resonance signals given arbi

1990-02-22

1992-02-11

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

G01R 3320

Patent

active

050878808

ABSTRACT:
A method for operating a nuclear resonance imaging device given gradients of arbitrary shapes includes the steps of equidistantly sampling the nuclear magnetic resonance signals in the time domain with a sampling rate that satisfies the sampling theorem, the sampling taking place even given gradients having a non-rectangular pulse shape. Since non-equidistant sampling in the K-space would normally lead to image artifacts, the method includes the further step, to avoid such artifacts, of calculating measured values from the acquired samples by interpolation, these measured values being equidistant in the K-space, and being entered into a measurement matrix. The equidistant sampling in the K-space, which is complicated, is thus superfluous given gradients having an arbitrary pulse shape.

REFERENCES:
patent: 4703271 (1987-10-01), Loeffler et al.
patent: 4748411 (1988-05-01), Holland
patent: 4891595 (1990-01-01), Granot

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