Abstract: The invention relates to a positioning device (1) for an X-ray detector (11) or an X-ray source (23), comprising an arched arm (15), inside of which the X-ray detector (11) or the X-ray source (23) can be mounted in a manner that enables it to be displaced in the direction of the arch, and comprising a base (9), inside of which the arched arm(15) is mounted in a manner that enables it to be displaced in the direction of the arch. Either the X-ray detector (11) is mounted in the positioning device (1) and the X-ray source (23) is placed separately therfrom or, conversely, the X-ray source (23) is mounted in the positioning device (1) and the X-ray detector (11) is placed separately there from.

Abstract: A motorized adjustable x-ray apparatus has a transmitter operable by AN operator for adjustment of a C-arm and mechanically connected with the C-arm. The transmitter allows adjustment of both an angulation angle and an orbital angle of the C-arm. The speed of the adjustment movement of the C-arm can be selected by actuation of the transmitter.

Abstract: The invention concerns a C-arm x-ray device with a non-isocentric C-arm on which an x-ray source is positioned and that can be orbitally or angularly rotated, whereby the C-arm x-ray device comprises a device fashioned to horizontally adjust the C-arm (which enables an adjustment of the C-arm within the plane of the C-arm) and a device fashioned to vertically adjust the C-arm, where the horizontal adjustment device and the vertical adjustment device are fashioned such that they can automatically move the central x-ray beam of the x-ray source back into the isocenter, given an orbital or angulatory rotation of the C-arm via the horizontal and vertical adjustment device. An appertaining method is also provided.