Magnetic resonance imaging apparatus and magnetic resonance imaging method
AssigneesKabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
InventorMasashi Ookawa
Life of this patent
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Abstract
A magnetic resonance imaging apparatus includes a data acquisition unit and an image generating unit. The data acquisition unit acquires echo signals by echo planar imaging which generates the echo signals by applying plural phase-encoding gradient magnetic field pulses and by repeatedly inverting a readout gradient magnetic field after one nuclear magnetic resonance (NMR) excitation. Each of the plural phase-encoding gradient magnetic field pulses has an intensity set so as to compensate an influence of spatially distributed eddy currents to each of the spatial imaging positions. The image generating unit generates MRI data and an image based on the acquired echo signals.
Claims21
A magnetic resonance imaging (MRI) apparatus comprising:
- a data acquisition unit configured to acquire echo signals by echo planar imaging which generates the echo signals by applying plural gradient magnetic field pulses for phase encoding and by repeatedly inverting a gradient magnetic field for readout after one nuclear magnetic resonance (NMR) excitation, the plural phase-encoding gradient magnetic field pulses each having an intensity set for each of plural spatial imaging positions so as to adaptively compensate an influence of spatially distributed eddy currents to each of the spatial imaging positions;
- and
- an image generating unit configured to generate MRI data and an image based on the acquired echo signals.
A magnetic resonance imaging (MRI) method comprising:
- acquiring echo signals by echo planar imaging which generates the echo signals by applying plural phase-encoding gradient magnetic field pulses and by repeatedly inverting a readout gradient magnetic field after one nuclear magnetic resonance (NMR) excitation, the plural phase-encoding gradient magnetic field pulses each having an intensity set for each of plural spatial imaging positions so as to adaptively compensate an influence of spatially distributed eddy currents to each of the spatial imaging positions;
- and
- generating MRI data and an image based on the acquired echo signals.
Dependencies are inferred from the claim text.