| 摘要 |
The invention relates to a device and to a method for magnetic resonance imaging (MRI) of a body. It is an object of the invention to provide a technique that enables dynamic profile sharing with significantly reduced motion artifacts. The method of the (such as keyhole) invention comprises the following steps: a) acquiring an MR data set (21) from an incomplete first part of k-space (C) by subjecting the body to an imaging sequence of RF pulses and switched magnetic field gradients; b) reconstructing an incomplete MR image (31) from the MR data set (21) acquired in step a) and deriving image transformation parameters describing motion of the body from the reconstructed incomplete MR image (31), -c) acquiring an MR data set (24) from an incomplete second part of k-space (P), which second part (P) is different from the first part (C) sampled in step a); d) applying a motion correction (40) to at least one of the MR data sets (21, 24) acquired in steps a) and c) according to the image transformation parameters derived in step b); e) reconstructing a final MR image (81) from a combination (71) of the motion-corrected MR data sets (61, 64).
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