There is disclosed a mobile radiographic imaging apparatus including a component operable to emit radiation for imaging a subject, an arm rotatably connected at a proximal end thereof to a body section of the apparatus, such that it is supported by the body section and can slew relative to the body section about an upright axis, and to a distal end of which said component is connected, and a generator assembly arranged in the body section and including a generator arranged in the casing and electrically connected to said component, the apparatus being configured such that the generator assembly rotates with the arm, about said axis, wherein the generator assembly has a centre of mass which is radially offset from said axis in a second direction that is substantially opposite to said first direction.
