Magnetic resonance imaging apparatus and magnetic resonance imaging method
First Claim
1. A magnetic resonance imaging apparatus comprising:
- an imaging signal acquisition unit configured to acquire magnetic resonance signals from an object as imaging signals;
a motion signal acquisition unit configured to repetitively acquire magnetic resonance signals having phase encode amount less than that of the imaging signals as motion signals;
a motion amount determination unit configured to obtain a motion amount using the motion signals;
a motion correction unit configured to perform correction processing of the imaging signals in accordance with the motion amount; and
an image reconstruction unit configured to reconstruct an image using the imaging signals after the correction processing.
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Abstract
An MRI apparatus includes an imaging signal acquisition unit, a motion signal acquisition unit, a motion amount determination unit, a motion correction unit and an image reconstruction unit. The imaging signal acquisition unit acquires MR signals as imaging signals. The motion signal acquisition unit repetitively acquires MR signals having PE amount less than that of the imaging signals as motion signals. The motion amount determination unit obtains a motion amount using the motion signals. The motion correction unit performs correction processing of the imaging signals in accordance with the motion amount. The image reconstruction unit reconstructs an image using the imaging signals after the correction processing.
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Citations
18 Claims
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1. A magnetic resonance imaging apparatus comprising:
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an imaging signal acquisition unit configured to acquire magnetic resonance signals from an object as imaging signals; a motion signal acquisition unit configured to repetitively acquire magnetic resonance signals having phase encode amount less than that of the imaging signals as motion signals; a motion amount determination unit configured to obtain a motion amount using the motion signals; a motion correction unit configured to perform correction processing of the imaging signals in accordance with the motion amount; and an image reconstruction unit configured to reconstruct an image using the imaging signals after the correction processing. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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2. A magnetic resonance imaging apparatus comprising:
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an imaging signal acquisition unit configured to acquire magnetic resonance signals from an object as imaging signals; a motion signal acquisition unit configured to obtain a part of the imaging signals and magnetic resonance signals having phase encode amount less than that of the imaging signals as motion signals; a motion amount determination unit configured to obtain a motion amount using the motion signals; a motion correction unit configured to perform correction processing of the imaging signals in accordance with the motion amount; and an image reconstruction unit configured to reconstruct an image using the imaging signals after the correction processing.
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3. A magnetic resonance imaging apparatus comprising:
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an imaging signal acquisition unit configured to acquire magnetic resonance signals from an object as imaging signals; a motion signal acquisition unit configured to repetitively acquire magnetic resonance signals having phase encode amount less than that of the imaging signals as motion signals; a motion amount determination unit configured to obtain a motion amount using the motion signals; a selection unit configured to select imaging signals within a specific range in accordance with the motion amount; and an image reconstruction unit configured to reconstruct an image using the imaging signals within the specific range.
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16. A magnetic resonance imaging method comprising steps of:
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acquiring magnetic resonance signals from an object as imaging signals; repetitively acquiring magnetic resonance signals having phase encode amount less than that of the imaging signals as motion signals; obtaining a motion amount using the motion signals; performing correction processing of the imaging signals in accordance with the motion amount; and reconstructing an image using the imaging signals after the correction processing.
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17. A magnetic resonance imaging method comprising steps of:
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acquiring magnetic resonance signals from an object as imaging signals; obtaining a part of the imaging signals and magnetic resonance signals having phase encode amount less than that of the imaging signals as motion signals; obtaining a motion amount using the motion signals; performing correction processing of the imaging signals in accordance with the motion amount; and reconstructing an image using the imaging signals after the correction processing.
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18. A magnetic resonance imaging method comprising steps of:
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acquiring magnetic resonance signals from an object as imaging signals; repetitively acquiring magnetic resonance signals having phase encode amount less than that of the imaging signals as motion signals; obtaining a motion amount using the motion signals; selecting imaging signals within a specific range in accordance with the motion amount; and reconstructing an image using the imaging signals within the specific range.
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Specification