The invention relates to a medical computed tomography imaging apparatus which includes a support construction (1) which is arranged to support a substantially ring-shaped structure (2) supporting x-ray imaging means (21, 22), which x-ray imaging means (21, 22) are arranged within said substantially ring-shaped structure supporting the imaging means (2) and movable within said substantially ring-shaped structure supporting the imaging means (2), which ring-shaped structure (2) supporting the imaging means (21, 22) includes an examination opening (4), whereto the object to be imaged can be positioned for imaging. According to the invention, at least one display (11) is arranged to the apparatus. The display is arranged in functional connection with at least one video camera (12), which at least one video camera (12) is arranged in connection with said ring-shaped structure (2) and as aimed, or so that it can be aimed inside said examination opening (4).