System and method for imaging a moving subject
AssigneeGeneral Electric Company
InventorPENG LAI
Life of this patent
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Abstract
An MRI system for imaging a moving subject is provided. The MRI system includes a magnet assembly and an MRI controller. The magnet assembly is configured to acquire a k-space via scanning the subject. The acquired k-space includes a plurality of datum each having a motion error. The MRI controller is configured to receive the acquired k-space from the magnet assembly. The MRI controller is further configured to suppress the motion error of each datum by reconstructing the k-space via a soft gating threshold in a non-iterative manner.
Claims20
An MRI system for imaging a moving subject, the MRI system comprising:
- a magnet assembly configured to acquire a k-space via scanning the subject, the acquired k-space including a plurality of datum each having a motion error;
- an MRI controller configured to receive the acquired k-space from the magnet assembly;
- and
- wherein the MRI controller is further configured to suppress the motion error of each datum by reconstructing the k-space via a soft gating threshold in a non-iterative manner.
A method for magnetic resonance imaging a moving subject, the method comprising:
- acquiring a k-space via scanning the subject with a magnetic resonance imaging system, the k-space including a plurality of datum each having a motion error;
- calculating a coil weight;
- reconstructing a datum of the plurality based at least in part on the coil weight and the plurality of datum;
- and
- wherein the coil weight reduces contributions to the reconstruction of the datum from datum of the plurality having motion errors that are large and increases contributions to the reconstruction of the datum from datum of the plurality having motion errors that are small.
An MRI controller for a MRI imaging system that images a moving subject, the MRI controller configured to:
- direct a magnet assembly of the MRI imaging system to acquire a k-space via scanning the subject, the k-space including a plurality of datum each having a motion error;
- estimate a soft gating filter;
- construct a motion regularization matrix based at least in part on the estimated soft-gating filter;
- calculate a coil weight based at least in part on the constructed motion regularization matrix;
- and
- reconstruct a datum of the plurality based at least in part on the coil weight and the plurality of datum in a non-iterative manner.
Dependencies are inferred from the claim text.