(US4571494-A)      The X-ray detector has a number of detector units and a pair of support members. Each detector unit has a base plate, a detector element secured to the base plate, and a retaining plate supporting the detector element. The base plate has a signal line and a ground line for delivering an electrical signal from the detector element. The retaining plate is positioned parallel to the detector element.    The support members are set apart and extend along an arc the centre of which is an X-ray source. Each support member has a number of slits (grooves) cut in the face facing the other support member and juxtaposed at predetermined intervals along the arc. The end portions of each retaining plate are fitted in one slit of one of the support members and the corresponding slit of the other support member, respectively.    USE -   In X-ray computerised tomography. (8pp)    (DE3311931-C)      The semiconductor X-ray radiation detector and has two supporting elements (14,15) some distance apart and perpendicular to the incident radiation, with the surfaces (14b,15b) facing one another having a number of recesses (14a,15a) at a uniform distance apart. These hold a number of semiconductor detecting units (1), held in the supporting elements and facing the incident radiation.    Each detecting unit includes a base plate, with a recess towards the radiation source, a plate-type semiconductor detecting element (2) mounted in the recess to receive the radiation and having its two main surfaces running parallel to the main surfaces of the base plate, an electrode layer on each surface of the detecting element, and a terminal connected to each electrode. The units are arranged in an arc.    USE/ADVANTAGE -   Small spacing of detector units gives maximum resolution for measurement of distribution of radiation.    (NL191858-B)      The X-radiation detector is for medical or technical equipment and has a line of detector elements secured between two metal strips forming portions of a circle with the radiation source at its centre. Each detector is mounted on a plate so that its ends fit into slots in the two strips, extending between them.    Each element is a rectangular plate attached to an insulating plate with a rectangular opening through it, filled with an adhesive substance. A conductor on one side of the element extends around one side of the opening and an earth line on the other side extends to the other side of the opening. They connect with respective electrode layers formed of different metals.