CPC G01R 33/56572 (2013.01) [G01R 33/3415 (2013.01); G01R 33/3664 (2013.01)] | 15 Claims |
1. A method for producing a streak-suppressed magnetic resonance (MR) image of a subject comprising:
generating an interference covariance matrix R from N coil images Ij(x, y), j={1, 2, . . . , N}, each of the N coil images Ij(x, y) corresponding to MR signals detected by a respective one of a phased array of N coils of an MRI scanner, at least some of the MR signals originating in a first plurality of voxels of the subject corresponding to an artifact-region of a coil image corrupted by an artifact, coordinates (x, y) corresponding to locations within a cross-sectional plane of the subject;
for each of a plurality of subject-regions of the cross-sectional plane centered at a respective location (x, y), determining a coil weight vector W (x, y) from the interference covariance matrix R; and
generating the streak-suppressed MR image by combining a plurality of coil images using a weighted sum of the N coil images Ij(x, y), each weight of the weighted sum being W*j(x, y), a jth element of a complex conjugate of the coil weight vector W(x, y).
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