| 摘要 |
The invention relates to a method of MR imaging of a body (10) placed in the examination volume of a MR device (1). It is an object of the invention to provide a method that enables efficient compensation of flow artefacts, especially for contrast-enhanced MR angiography in combination with Dixon water/fat separation. The method of the invention comprises the steps M of: a) generating at least two gradient echo signals at two different echo times by subjecting the portion of the body (10) to an imaging sequence of RF pulses and switched magnetic field gradients, wherein the 0th moment of the readout magnetic field gradient essentially vanishes at the time of the first gradient echo, the 1st moment of the readout gradient being non-zero at the time of the en first gradient echo, while both the 0th and 1st moments of the readout magnetic field gradient essentially vanish at the time of the second gradient echo; b) acquiring the gradient echo signals; c) repeating steps a) and b) for a plurality of phase encoding steps. Moreover, the invention relates to a MR device for carrying out the method of the invention and to a computer program to be run on a MR device; d) reconstructing a first MR image from the gradient echo signals of the first gradient echo and a second MR image from the gradient echo signals of the second gradient echo; and e) identifying ghosting artefacts in the first and/or second MR image by comparing the first and second MR images. |
