Movement-dependent reconstruction of magnetic resonance images
First Claim
1. A method for reconstructing magnetic resonance images, the method comprising:
- acquiring magnetic resonance measurement data in an acquisition period;
determining a motion curve over the acquisition period using the magnetic resonance measurement data;
separating the acquisition period into a plurality of sub-periods using the motion curve and a defined motion condition, wherein the plurality of sub-periods are separated by one or more separating times, one or more separating periods, or the one or more separating times and the one or more separating periods; and
reconstructing at least one magnetic resonance image, wherein each magnetic resonance image of the at least one magnetic resonance image is reconstructed using the magnetic resonance measurement data from at least one sub-period of the plurality of sub-periods.
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Abstract
The invention relates to a method for reconstructing magnetic resonance images, to a magnetic resonance apparatus and to a computer program product. According to the method, measurement data is acquired in an acquisition period. The measurement data is used to determine a motion curve over the acquisition period. In addition, at least one magnetic resonance image is reconstructed. In this process, the acquisition period is separated into a plurality of sub-periods by one or more separating periods and/or separating times in which the motion curve satisfies a defined motion condition, and each magnetic resonance image is reconstructed using the measurement data from at least one sub-period.
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Citations
20 Claims
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1. A method for reconstructing magnetic resonance images, the method comprising:
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acquiring magnetic resonance measurement data in an acquisition period; determining a motion curve over the acquisition period using the magnetic resonance measurement data; separating the acquisition period into a plurality of sub-periods using the motion curve and a defined motion condition, wherein the plurality of sub-periods are separated by one or more separating times, one or more separating periods, or the one or more separating times and the one or more separating periods; and reconstructing at least one magnetic resonance image, wherein each magnetic resonance image of the at least one magnetic resonance image is reconstructed using the magnetic resonance measurement data from at least one sub-period of the plurality of sub-periods. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A magnetic resonance apparatus comprising:
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an acquisition unit configured to acquire magnetic resonance measurement data in an acquisition period; an analysis unit configured to determine a motion curve over the acquisition period using the magnetic resonance measurement data and configured to use the motion curve to separate the acquisition period into a plurality of sub-periods using a defined motion condition, wherein the plurality of sub-periods are separated by one or more separating times, by one or more separating periods, or by the one or more separating times and the one or more separating periods; a reconstruction unit configured to reconstruct at least one magnetic resonance image and configured to reconstruct each magnetic resonance image of the at least one magnetic resonance image using the measurement data from only one sub-period of the plurality of sub-periods. - View Dependent Claims (16, 17, 18, 19)
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20. A non-transitory computer-readable storage medium storing instructions executable by a programmable processing unit of an analysis unit, a reconstruction unit, or the analysis unit and the reconstruction unit, the instructions comprising:
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acquiring measurement data in an acquisition period; determining a motion curve over the acquisition period using the measurement data; separating the acquisition period into a plurality of sub-periods using the motion curve and a defined motion condition, wherein the plurality of sub-periods are separated by one or more separating times, by one or more separating periods, or by the one or more separating times and the one or more separating periods; and reconstructing at least one magnetic resonance image, wherein each magnetic resonance image of the at least one magnetic resonance image is reconstructed using the measurement data from at least one sub period of the plurality of sub-periods.
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Specification