An installation for enabling the scanning of a leg (5) of a horse (8) with a magnetic resonance imaging (MRI) device comprises a floor section (90) on which the horse (8) stands with the leg to be scanned. The floor section (90) is mounted above a support surface (10) for the MRI device and includes at least one floor member which is moveable to expose an opening for accommodating a magnetic scanning element (1) adjacent the leg. The floor section (90) may have three moveable floor members and either pair of adjacent floor members may be moveable to expose a pair of slots or openings for accommodating the magnetic scanning element (1) on opposite sides of the leg supported on the floor section (90) between the pair of openings.