Regularized variable density sense
AssigneeKoninklijke Philips Electronics N.V.
InventorsUlrich Katscher, Johan Van Den Brink, Miha Fuderer
Life of this patent
Estimating the term…
Abstract
A magnetic resonance imaging apparatus includes a plurality of radio frequency coils (34) that acquire variable density sensitivity encoded data that is undersampled at least away from the center of k-space. A reconstruction processor (52) for each coil reconstructs: a regularization image reconstructed from a higher density portion of the variable density sensitivity encoded data disposed at or near a center of k-space acquired by that coil; and a folded image reconstructed from the variable density sensitivity encoded data acquired by that coil. An unfolding processor (66) unfolds the folded images. The unfolding is regularized by the regularization images.
Claims20
A magnetic resonance imaging method comprising:
- acquiring variable density sensitivity encoded data with a higher density at and adjacent a center of k-space and with a lower, undersampled density away from the center of k-space;
- constructing one or more regularization images from the higher density portion of the variable density sensitivity encoded data disposed at and adjacent the center of k-space;
- and
- reconstructing the variable density sensitivity encoded data into an unfolded reconstructed image, the reconstructing including:
- reconstructing the higher and lower density variable density sensitivity encoded data into a plurality of folded images, and
- unfolding the folded images to form the unfolded image using the one or more regularization images.
A magnetic resonance imaging apparatus comprising:
- a plurality of radio frequency coils acquiring variable density sensitivity encoded data that is undersampled at least away from the center of k-space;
- a reconstruction processor that for each coil reconstructs:
- a regularization image reconstructed from a higher density portion of the variable density sensitivity encoded data disposed at or near a center of k-space acquired by that coil, and
- a folded image reconstructed from the variable density sensitivity encoded data acquired by that coil;
- and
- an unfolding processor that unfolds the folded images, the unfolding being regularized by the regularization images.
Dependencies are inferred from the claim text.