This invention relates to a computer tomography apparatus, especially to a computer tomography apparatus intended for use in connection with odontological diagnostics. In the computer tomography apparatus according to the invention, it is essential that one has arranged thereto, in addition to a computer tomography imaging station, a second imaging station comprising second patient support means 16′ at a distance from said computer tomography imaging station. The invention enables more versatile odontological imaging than prior art apparatuses, whereby one does not have to acquire to the clinic, in addition to the computer tomography apparatus, e.g. a separate skull-imaging device.