tomography on a limb or a shoulder of a human body comprising a superconductive magnet coil arrangement having coil sets arranged at an axial spacing one from the other for generating a static homogeneous magnetic field in an examination volume and further a coil frame carrying the coil sets and a cryostat intended for cooling the windings is characterized by the fact that the windings are rigidly interconnected by the coil frame at low temperature and that there is provided a transverse room temperature access to the examination volume which extends over approximately 180 u00b0 in circumferential direction related to the axis of the magnet coil arrangement this enables examinations to be carried out at ease application_number US 3771793 A description in fig1 the entire magnet system including the cryostat are indicated generally by reference numeral 1 a first coil set comprises partial coils 2a and 3a provided in coaxial arrangement a second coil set comprises partial coils 2b and 3b arranged at a certain distance from the first mentioned coil set but also in coaxial arrangement relative to the axis of the latter the axis 4 of the before mentioned coils and thus the axis of the magnet system extends horizontally in the drawing plane of fig1 a coil frame 6 made from an aluminium alloy has the shape illustrated.