Patent ID: 7855558

Claim:
A device for magnetic resonance imaging of a body placed in an examination volume, the device comprising means for establishing a substantially homogeneous main magnetic field in the examination volume, means for generating switched magnetic field gradients superimposed upon the main magnetic field, means for radiating RF pulses towards the body, control means for controlling the generation of the magnetic field gradients and the RF pulses, means for receiving and sampling magnetic resonance signals, and reconstruction means for forming MR images from the signal samples, the device being arranged to a) generate a series of multiple frequency-encoded MR echo signals from a nuclear spin species having a known multi-line spectrum by subjecting at least a portion of the body to an MR imaging pulse sequence using multiple incremental time-encoding echo time values, b) acquire the MR echo signals for reconstructing a series of time-encoded MR images therefrom, wherein one time-encoded MR image is reconstructed for each time-encoding echo time values, c) transform the series of time-encoded MR images into a series of spectral domain MR images on a pixel-by-pixel or voxel-by-voxel basis by applying a Fourier transformation in the time-encoding direction such that the resulting series of spectral domain MR images contains a separate MR image for each spectral line of the multi-line spectrum, wherein the device is further arranged to translate each image from the series of spectral domain MR images in the frequency-encoding direction by a translation distance being proportional to the frequency of the respective spectral line and to superimpose the MR images to obtain a final image by computing the pixel-or-voxel-wise sum of the MR images from the series of spectral domain MR images.