Magnetic resonance method for forming a fast dynamic image

A magnetic resonance method for forming a fast dynamic image, comprising the steps of:

• providing an array of multiple sensors,
• providing a sensitivity map of each of the sensors prior to imaging,
• arranging the sensors such that at least two adjacent sensors operatively record signals originating from a common imaging position whereby the signals are multiplied by a sensitivity factor of the respective sensor at the respective imaging position obtained from the sensitivity maps and image intensity is calculated from the signals measured by the sensors,
• performing fast dynamic imaging to obtain fast dynamic images from a plurality of signals acquired by the sensors while the number of phase encoding steps is reduced from a full set of phase encoding steps,
• acquiring a normal magnetic resonance image with the full set of phase encoding steps for each sensor prior to formation of the fast dynamic images,
• extracting a subset of phase encoding trajectories from the normal image acquired prior to formation of the fast dynamic images commensurate with the phase encoding trajectories obtained by the fast dynamic imaging,
• reconstructing an image from the subset of phase encoding trajectories,
• comparing the signals of an initial fast dynamic image and the signals of the reconstructed image to obtain an estimate of fold-over artefacts in the initial fast dynamic image, and
• compensating for the signals of the fold-over artefacts in the signals obtained by the fast dynamic imaging for subsequent fast dynamic images using the estimate of the fold-over artefacts in the initial fast dynamic image to thereby obtain corrected fast dynamic images.