Magnetic resonance imaging apparatus
AssigneesKabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
InventorsWayne R. DANNELS, Takashi SHIGETA
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Abstract
An MRI system according to an embodiment includes an MRI sequence controller and an MRI system controller. Serving as a prescan unit, the MRI sequence controller performs a prescan for acquiring a sensitivity distribution of a coil. Serving as a main scan unit, the MRI sequence controller performs a main scan for acquiring signals of a magnetic resonance image. Serving as a corrector, the MRI system controller corrects the sensitivity distribution in accordance with a distortion that is contained in the magnetic resonance image and that results from the performing of the main scan. Serving as a generator, the MRI system controller generates an output magnetic resonance image using the corrected sensitivity distribution.
Claims8
A magnetic resonance imaging apparatus comprising:
- a prescan unit that performs a prescan for acquiring a sensitivity distribution of a coil;
- a main scan unit that performs a main scan for acquiring signals of a magnetic resonance image;
- a corrector that corrects the sensitivity distribution in accordance with a distortion that is contained in the magnetic resonance image and that results from the performing of the main scan;
- and
- a generator correct generates an output magnetic resonance image, using the corrected sensitivity distribution.
A magnetic resonance imaging apparatus comprising:
- a prescan unit that performs a prescan for acquiring sensitivity distributions of a plurality of coils, respectively;
- a main scan unit that performs a main scan for performing parallel imaging as a main scan for acquiring signals of a magnetic resonance image;
- a mask generator that generates an intermediate magnetic resonance image by performing first unfolding processing on signals obtained by the parallel imaging and generate a mask or weighting information using the generated intermediate magnetic resonance image;
- and
- a generator that generates an output magnetic resonance image by performing second unfolding processing using the sensitivity distributions of the respective coils obtained by the prescan, the signals obtained by the parallel imaging, and the mask or the weighting information.
Dependencies are inferred from the claim text.