Magnetic resonance imaging apparatus

Details Magnetic resonance imaging apparatus Magnetic resonance imaging apparatus

1994-08-04

1995-07-25

Arana, Louis

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01V 300

Patent

active

054365635

ABSTRACT:
A magnetic resonance imaging apparatus includes a reception antenna which picks high-frequency magnetic resonance signals, a high-frequency receiver connected to the reception antenna which demodulates the high-frequency magnetic resonance signals and supplies samples of the demodulated magnetic resonance signals, to a signal processing unit which allocates the samples to a spatial frequency space. For avoiding certain types of image artifacts, the signal processing unit includes an interpolation unit which replaces a sample in the spatial frequency space with an interpolated value if the sample deviates from at least one neighboring sample in the spatial frequency space by an amount which upwardly exceeds a limit value.

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patent: 5303706 (1994-04-01), Moshfeghi
"Corrections for Nonuniform Sampling Distortions in Magnetic Resonance Imagery," Trussell et al., IEEE Trans. on Med. Imag., vol. 7, No. 1, Mar. 1988, pp. 32-44.
"A Homogeneity Correction Method for Magnetic Resonance Imaging with Time-Varying Gradients," Noll et al., IEEE Trans. on Med. Imag., vol. 10, No. 4, Dec. 1991, pp. 629-637.

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