Abstract: The present application discloses methods and systems for scanning an object. The scanning system provides a first detector region having a thickness of at least 2 mm and a second detector region having a thickness of at least 5 mm. The second detector region is arranged to receive radiation that has passed through the first detector region. The method includes irradiating the object with radiation having a peak energy of a least 1 MeV, and detecting the first profile radiation after it has interacted with or passed through the object in order to provide information relating to the object.

Abstract: The X-ray fluorescence spectrometer of the present invention includes a sample table (8) for a sample (S) having a crystalline structure, an X-ray source (1), a detecting unit (7) for detecting secondary X-rays (4) from the sample (S), a rotating unit (11) for rotating the sample table (8), a parallel translating unit (12) for causing the sample table (8) to undergo a parallel translational movement, a selecting unit (17) for selecting three of circumvent angles, at which diffracted X-rays can be circumvented, based on a diffraction profile obtained from the angle of rotation of the sample (S) and the intensity of secondary X-rays (4), the interval between the neighboring circumvent angles being smaller than 180°, and a control unit (15) for controlling the rotating unit (11) so as to set the sample (S) at the circumvent angle at which the sample table (8) will not interfere with any other structures.

Abstract: A material preferably in crystal form having a low atomic number such as beryllium (Z=4) provides for the focusing of x-rays in a continuously variable manner. The material is provided with plural spaced curvilinear, optically matched slots and/or recesses through which an x-ray beam is directed. The focal length of the material may be decreased or increased by increasing or decreasing, respectively, the number of slots (or recesses) through which the x-ray beam is directed, while fine tuning of the focal length is accomplished by rotation of the material so as to change the path length of the x-ray beam through the aligned cylindrical slots. X-ray analysis of a fixed point in a solid material may be performed by scanning the energy of the x-ray beam while rotating the material to maintain the beam's focal point at a fixed point in the specimen undergoing analysis.

Abstract: The X-ray fluorescence analyzer (100) includes: an enclosure (10); a door (20) for putting the sample into and out of the enclosure; a height measurement mechanism (7) capable of measuring a height at the irradiation point; a moving mechanism control unit (9) for adjusting a distance between the sample and the radiation source as well as the X-ray detector based on the measured height at the irradiation point; a laser unit (7) for irradiating the irradiation point with a visible light laser beam; a laser start control unit (9) for irradiating the visible light laser beam by the laser unit (7) when the door is open state; and a height measurement mechanism start control unit (9) for starting the height measurement mechanism to measure the height at the irradiation point when the door is opened.

Abstract: A process for preparing, and an analysis of, liquid or pasty substances not consisting exclusively of volatile constituents and a sample body for use in such a process. The substance to be analyzed is applied to a rigid sample body with at least one flat and smooth analysis surface formed of an absorptive material. The substance is adsorbed and absorbed by the sample body, and is analyzed using an X-ray fluorescence analysis.

Abstract: The present application relates to a method for determining an indicator body part subject to vital movement that is not to be irradiated and that serves as an indicator of the change in position of a body part subject to vital movement that is to be irradiated, in particular a tumor in an anatomical body. The method can further include determining an indicator trajectory that describes the vital movement of the indicator body part.

Abstract: A dental x-ray image media holder comprising: a backing plate affixed to a bite block, the backing plate including a least one channel for receiving a post affixed to the bite block, such that the bite block can be selectively moved within the channels to orient the bite block in a predetermined position relative to the backing plate; and a plurality of indicia, such that at least one of the indicia is used to indicate a first position of the bite block relative to the backing plate, the first position being associated with a predetermined first dental imaging procedure; and a locking member configured to prevent rotational movement of the bite block along a post axis upon engagement of the locking member.

Abstract: A solid-state image pickup apparatus 1A includes a photodetecting section 10A and a signal readout section 20 etc. In the photodetecting section 10A, M×N pixel units P1,1 to PM,N are arrayed in M rows and N columns. When in a first imaging mode, a voltage value according to an amount of charges generated in a photodiode of each of the M×N pixel units in the photodetecting section 10A is output from the signal readout section 20. When in a second imaging mode, a voltage value according to an amount of charges generated in the photodiode of each pixel unit included in consecutive M1 rows in the photodetecting section 10A is output from the signal readout section 20. When in the second imaging mode than when in the first imaging mode, the readout pixel pitch in frame data is smaller, the frame rate is higher, and the gain being a ratio of an output voltage value to an input charge amount in the signal readout section 20 is greater.

Abstract: Methods and apparatus for collimation of detectors in an imaging system are provided. One an imaging system includes a radiation source configured to project radiation from a focal spot onto an object and a plurality of radiation detectors disposed around at least a portion of the object. The plurality of radiation detectors detect received radiation along a path projected from the focal spot to the plurality of detectors. The imaging system also includes a plurality of collimators positioned between the object and the plurality of detectors, wherein the collimators have a tapered configuration.

Abstract: A miniature X-ray tube for intravascular or intracorporeal radiation treatment in living beings is proposed. The X-ray tube comprises a cylindrical housing section with a longitudinal axis. The miniature X-ray tube also comprises a cylindrical or cylindrical-tube-shaped first field emission cathode arranged concentrically about the longitudinal axis in the housing with a plurality of carbon nanotubes which emit electrons radially outward. The miniature X-ray tube also comprises a second field emission cathode in the housing with a plurality of carbon nanotubes which emit electrons in the direction of longitudinal axis. The miniature X-ray tube only emits little heat and is robust against mechanical stresses.

Abstract: This invention relates to high power X-ray sources, in particular to those equipped with a rotating X-ray anode capable of delivering a higher short time peak power than conventional rotating x-ray anodes. This invention can overcome the thermal limitation of peak power by allowing fast rotation of the anode and by introducing a lightweight material with high thermal conductivity in the region adjacent to the focal track material. The fast rotation can be provided by using sections of the rotating anode disk made of anisotropic high specific strength materials with high thermal stability that can be specifically adapted to the high stresses of anode operation. Uses include high speed image acquisition for X-ray imaging, for example, of moving objects in real-time such as in medical radiography.

Abstract: A computed tomography scanner may include a component mounting assembly, an x-ray tube, a filter assembly, and a detector assembly. The filter assembly filters an x-ray fan or cone beam generated by the x-ray tube such that the x-ray beam comprises a high dose portion and one or more low dose portions. The filter assembly reduces the photon count of the low dose portions. The x-ray tube may be coupled to the component mounting assembly at a first end and the detector assembly coupled at a second end that is opposite from the first end. The component mounting assembly is rotatable about a rotation axis. The detector assembly includes an array of individual detector elements capable of detecting x-ray photons of the x-ray beam. The high dose portion strikes a high resolution region of the detector assembly and the low dose portion strikes a low resolution region of the detector assembly.

Abstract: A medical radiological system has a radiological device with at least one element that can be electrically adjusted in order to allow an adaptation of the radiological device to body dimensions of a patient to be examined. The radiological device has a controller with an interface that receives a patient parameter set from a computer, with which patient data are processed and stored. The controller calculates a desired position of the element from the received patient data set, and automatically controls positioning of the element by electrically adjusting the element to the desired position.