| abstract |
The invention relates to an MR imaging method in which a plurality of sequences, each of which comprises at least one RF pulse and at least one magnetic gradient field, act on an examination zone and in which at least one MR image is reconstructed from the MR signals thus acquired, and also relates to an apparatus for carrying out this method. Optimization can be achieved by subjecting the MR image to an analysis and by adjusting the variation in time of the RF pulses and/or the magnetic gradient field for the subsequent sequences in dependence on the analysis result. In particular, for positioning an object with suitable MR contrast in a body under examination at least one MR survey image of the body is formed prior to the introduction of the object. Then, after introduction of the object into the body, MR images of a small target region around and in front of the object are continuously formed and combined with the MR survey image for display purposes. The MR images of the target area are automatically analyzed to determine the location of the target region for the next MR image. |