3D Coronary MRA with 2D beat-to-beat translational and bin-to-bin affine respiratory motion correction using a golden radial image navigator

Image navigators have been proposed as a way to improve respiratory motion correction and to increase scan efficiency in 3D coronary MR angiography. Existing approaches allow for either translational motion correction to be performed on a beat-to-beat basis or for affine correction to be performed for several respiratory bins. A new golden radial navigator is proposed that allows both beat-to-beat translational and bin-to-bin affine corrections to be performed by combining navigator data from different respiratory positions. With the proposed approach, images of comparable quality to gated scans are achieved, with affine correction showing further improvement over translational correction only.

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