The invention relates to an imaging NMR device and method in which an object is exposed to a stationary polarization field B.sub.0 and an electromagnetic alternating field. Nuclear resonant processes are induced in said object detected as test signals, and are visually represented. The stationary magnetic polarization field has at least one spatially limited volume region inside said object. The spatially limited volume region has a greater magnetic flux density than the remaining region of said object so that said nuclear resonant processes are induced solely in said spatially limited volume region. The test signals from said nuclear resonant processes induced inside said limited volume region are detected and displayed. The spatial position of said limited volume region (4) is changed at least once in a controlled manner and said test signals are detected again from said positionally modified volume region.