MR imaging method and apparatus with water signal supression

Details MR imaging method and apparatus with water signal supression MR imaging method and apparatus with water signal supression

1996-08-13

1998-05-12

O'Shea, Sandra L.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, A01B 5055

Patent

active

057511454

ABSTRACT:
An MR imaging method using NMR phenomenon and including the following steps: emitting a first group of RF pulses including a first inversion RF pulse, and excitation RF pulses emitted to excite a plurality of slices in a predetermined order; emitting slice-selecting gradient field pulses; emitting phase-encoding gradient field pulses; collecting a first group of echo signals; emitting a second group of RF pulses including a second inversion RF pulse having substantially the same frequency band as the first inversion RF pulse, and second excitation RF pulses emitted to excite the plurality of slices in a reverse order; emitting slice-selecting gradient field pulses; emitting phase-encoding gradient field pulses; collecting a second group of echo signals; repeating this pulse sequence while varying the phase-encoding gradient field pulses; adding two data corresponding to each slice, which data are included, respectively, in a first group of data and in a second group of data, thereby forming a new group of data; and reconstructing slice images.

REFERENCES:
Magnetic Resonance in Medicine, vol. 28, 1992, pp. 153-162, XP 000651579, "Use of Fluid-Attenuated Inversion-Recovery Pulse Sequences for Imaging the Spinal Cord", White et al.
American Journal of Neuroradiology, vol. 13, 1992, pp. 1555-1564, XP000651587, MR of the Brain Using Fluid-Attenuated Inversion Recovery (FLAIR) Pulse Sequences, DeCoene et al.

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