[en] Neutron imaging often provides important complementary information to that yielded by x-rays. Neutrons, however, also have a permanent magnetic dipole moment, making them highly sensitive to magnetic fields - a property that can be combined with standard radiographic and tomographic imaging approaches to reveal macroscopic magnetic properties. This technique has recently been developed at the Hahn-Meitner Institute (HMI) in Berlin for the visualisation of magnetic fields both within and around matter, information that is inaccessible using other methods. (orig.)