Abstract: With a view to providing an X-ray irradiator superior in workability in mounting a collimator box to an X-ray tube, the X-ray irradiator includes: a ring provided on an entry plate of the collimator box so as to surround an X-ray incidence window, the ring receiving therein a flange of the X-ray tube and having plural slots formed radially through the ring; plural tongue pieces inserted through the slots from outside to inside of the ring and holding down the back side of the flange; and a pair of half-rings which holds the plural tongue pieces at positions outside the ring and which, when one ends and opposite ends thereof are respectively opposed to each other, surrounds the ring with the plural tongue pieces inserted respectively into the plural slots.

Abstract: An intraoral x-ray film packet having non-lead radiation shielding for shielding scattered radiation. The packet includes a film chip and a radiation shielding member. The film chip has two sides and the radiation shielding element is disposed on one side of the film chip to provide radiation shielding when the film packet is exposed to radiation. The radiation shielding element is made of a material including a thermoplastic and a non-lead metal powder and/or non-lead metal compound. In one configuration, the film chip and the radiation shielding element are disposed within a light-tight envelope. In another configuration, the radiation shielding element is one side of the envelope, wherein the envelope has two opposing sides, and the chip is disposed within the envelope.

Abstract: Apparatus for imaging an object (13) irradiated with an X-ray beam (12) by detecting a transmitted X-ray beam transmitted through the object. A crystal analyser (15) receives the transmitted X-ray beam and emits a first diffracted X-ray beam to a detector assembly (14) comprising first and second X-ray detectors (16 and 17). The first detector (16) is a monochromating semiconductor detector which detects a first portion of the first diffracted X-ray beam to generate first image data, and which diffracts a second portion of the first diffracted beam to the second detector (17) which generates second image data. Image processing means (18) are provided for combining the first and second image data to derive a refraction image and an absorption image of the object (13).

Abstract: An X-ray apparatus capable of performing both computerized tomography (CT) imaging and usual radiography imaging (usual imaging) can realize high definition even in the usual imaging. In the X-ray apparatus, for the usual imaging, since a chair serving as a supporting structure for supporting a subject on a rotatable table is not required, the chair is withdrawn from an imaging field. The usual imaging is controlled so as to be permitted when the supporting structure is withdrawn from the imaging field. For imaging a knee, for example, sliding the chair allows imaging keeping the knee being in the rotation center. Therefore, a wide variety of imaging operations can be realized with a single flat-panel sensor.

Abstract: An offset data calculator has a normal offset data calculation function for calculating offset data based on data obtained from an X-ray flat panel detector while no X-ray is incident in each of the modes, i.e., an entire region fluoroscopy mode, a partial region fluoroscopy mode, imaging mode, etc. and storing the data in an offset data storage device, and additionally has a function for updating, upon calculation of new offset data in any of the modes, another mode offset data stored in the offset data storage device based on the new offset data calculated. Thus, from offset data acquired in any of the plurality of modes, it is possible to obtain the latest offset data in all the modes.

Abstract: A system for generating images by using monochromatic x-rays is described. The system includes an accelerator configured to increase energy of an electron beam, at least one detector element configured to receive x-rays having multiple energies generated by interaction of the electron beam with at least one laser beam, and an image reconstructor configured to reconstruct at least one image by processing the x-rays.