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T2-weighted three-dimensional MP-RAGE MR imaging.

J P Mugler·T A Spraggins·J R Brookeman
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Abstract

The application of three-dimensional (3D) magnetization-prepared rapid-gradient-echo (MP-RAGE) imaging to the acquisition of T2-weighted 3D data sets has been investigated, with a 90 degrees x-180 degrees y-90 degrees-x pulse set (driven equilibrium) for the T2 contrast preparation. A theoretical model was used to study the contrast behavior of brain tissue. The effects of radio-frequency and static-field inhomogeneities and eddy currents on the T2 contrast preparation and the effects of eddy currents on the gradient-echo acquisition resulted in blurring and intensity banding artifacts. With a multistep gradient preparation, these artifacts could be suppressed. With further development, this technique may yield a clinically practical method for obtaining T2-weighted 3D data sets of relatively large volumes (eg, the whole head) suitable for multiplanar reformatting.

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ArtifactsBrainCerebrospinal FluidHumansImage EnhancementMagnetic Resonance ImagingMagneticsRheologySignal Processing, Computer-AssistedJournal ArticleResearch Support, Non-U.S. Gov't

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J P Mugler, T A Spraggins, J R Brookeman. T2-weighted three-dimensional MP-RAGE MR imaging.. https://doi.org/10.1002/jmri.1880010621

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