A magnetic resonance apparatus has a basic field magnet that generates a basic magnetic field with a homogeneity region of the basic magnetic field in which the basic magnetic field is homogeneous and with a maximum real measurement volume contained in the homogeneity region. The apparatus has a movable patient bed and a control unit that controls the movable patient bed. The maximum measurement volume thereby exhibits a cylindrical shape. A virtual total measurement volume that is greater than the maximum real cylindrical measurement volume can be generated by the control unit together with the movable patient bed.