In an MRT method and apparatus with oversampling in at least one phase
coding direction of a first region of interest to be visualized, an
overview slice image is acquired across the entire subject to be examined
in a selected slice, a marking input of the first image region of
interest to be measured is detected in the overview slice image, and the
first image region is expanded in at least one phase coding direction,
dependent on the geometry of the first image region, the overview slice
image, as well as the relative position of both image regions relative to
one another, such that an expanded, oversampled second image region is
obtained that completely contains the first image region and is
foldover-free in this first image region.