Abstract: An apparatus for radiographic image acquisition has a radiation source with an associated laser device for representation of a linear light marking on the examination subject to align the subject relative to the radiation source for a subsequent image acquisition. The laser of the laser device is operated pulsed with a pulse-pause ratio of 1:n, with n>1.

Abstract: An x-ray positioning device that allows a dental practitioner to adjust the x-ray beam horizontally and vertically relative to the center of the radiographic film with a great degree of precision. The device includes a frame, a bite block connected to the frame, an aiming ring connected to the frame, and an image receptor holder that is also connected to the frame. The aiming ring and image receptor holder are adjustable so as to allow the x-ray beam directed through the aiming ring to be adjustable horizontally and vertically relative to the center of an image receptor (e.g. a radiographic film packet) retained by the image receptor holder.

Abstract: For automatically controlling or adjusting the X-ray dose when scanning an examination subject in a CT apparatus, a series of reference measurements are initially made by obtaining CT images of respective phantoms having different attenuation. The tube current for each phantom that produces an image of the phantom having an acceptable noise level, and thus an acceptable image quality, is stored in a table. In a subsequent CT scan of an examination subject, the tube voltage is automatically adjusted when irradiating a region of the subject having attenuation comparable to the attenuation of one of the phantoms, so as to employ the tube current when irradiating the examination subject that produced the image of acceptable quality for the comparable phantom.

Abstract: In an apparatus and a method for generating monochromatic X-ray radiation, an X-ray source, a monochromator and a slit collimator are arranged relative to one another such that X-rays of a specific energy among the X-rays emanating from the X-ray source are reflected at the monochromator and emerge through the slit of the slit collimator as a fan-shaped beam of monochromatic X-radiation. For scanning an examination subject with the X-ray beam, the monochromator is adjustable relative to the X-ray source and the slit collimator such that the condition for the reflection angle required for the reflection of X-rays of the specific energy at the monochromator remains substantially satisfied during the adjustment, and essentially only X-rays of the specific energy pass through the slit of the slit collimator.

Abstract: An imaging tomography apparatus, in particular x-ray computed tomography apparatus, for examining an examination subject has at least two acquisition systems, each having a radiator and a data acquisition unit to detect the radiation originating from the associated radiator. The acquisition systems are capable of rotating around a common rotation axis with a constant angular separation in the azimuthal direction. Radiation from only one of the radiators is permitted to reach the examination subject during the rotation of the acquisition systems. Signal contributions by the x-ray tubes not supplying this data acquisition unit with primary radiation arrive are prevented, the projection data set generated by one of the data acquisition units.

Abstract: An X-ray diagnosis apparatus includes an X-ray tube for projecting X-rays onto a subject, a two-dimensional X-ray detector for detecting X-ray signals from the subject, an image processing unit for generating image signals to perform image display of an image represented by the X-ray signals received from the two-dimensional X-ray detector, and an image displaying unit for displaying the image. The X-ray diagnosis apparatus further has a noise eliminating unit for generating noise correction signals from the X-ray signal of two scanning lines that are adjacent to each other out of a plurality of scanning lines of the two-dimensional X-ray detector and for eliminating noise in an X-ray signal of the scan lines by using the noise correction signal.

Abstract: The system and method described herein facilitate back-to-back automatic scanning of moving vehicles without have the vehicles stop in the scanning zone. The system includes a scanning zone that comprises a radiation source and a radiation source detector. The system further includes a first sensor component for automatically sensing when a first portion of the moving target has passed through the scanning zone and a second portion of the moving target is about to enter the scanning zone, wherein the first sensor component sends a signal to the automated target inspection system to initiate a scan of the second portion upon sensing that the second portion of the target is about to enter the scanning zone.

Abstract: An -ray emitted from an incident optical system is incident on a sample supported by a sample support mechanism, and a diffracted X-ray is detected by a receiving optical system. The incident optical system includes an X-ray source and a multilayer-film mirror. An attitude controlling unit of the sample support mechanism switches a condition of the sample support mechanism from a state maintaining the sample to have a first attitude in which a normal line of the surface of the sample is parallel with a first axis of rotation to another state maintaining the sample to have a second attitude in which the normal line of the surface of the sample is perpendicular to the first axis of rotation. When the receiving optical system is rotated around the first axis of rotation while maintaining the sample in the first attitude, in-plane diffraction measurement is possible.

Abstract: The invention relates to X-ray vacuum tubes. To let the X-rays out of the tube, in the case of an X-ray generator tube, when the wall of the tube is made of metal, the invention provides an exit window (50) that is made of pyrolytic graphite. The window preferably has a bell shape and is brazed to a copper collar (60) that is itself brazed to the metal wall (10) of the tube.

Abstract: To solve a difference in an emitting directions by switching the types of X-rays. An X-ray generator comprises: an anticathode unit 3 in which a plurality of anticathode parts 2 (2A and 2B) that emit X-rays by collision of thermoelectrons are disposed side by side; a cathode 4 for releasing the thermoelectrons toward the anticathode parts 2A and 2B on the anticathode unit 3; and a cathode moving mechanism that switches the anticathode parts, against which the thermoelectrons from the cathode 4 collide by moving the cathode 4 along the diction of aligning anticathode parts 2A and 2B.

Abstract: An X-ray diagnosis apparatus for obtaining an X-ray image comprises an X-ray radiator, a detector, a first mechanism, a second mechanism, a controller, and an image processor. The X-ray radiator is configured to radiate an X-ray to a specimen. The detector is configured to detect an X-ray data resulting from the X-ray. The first mechanism is coupled to the detector and is configured to shift the detector along a detecting plane of the detector. The second mechanism is coupled to the X-ray radiator and is configured to change a radiation direction of the X-ray against the detector. The controller is configured to control the second mechanism in accordance with the shift of the detector. The image processor is coupled to the detector and is configured to prepare a fluoroscopic image data as the X-ray image based on the X-ray data. The image processor also corrects a deformation of the fluoroscopic image data.

Abstract: The present invention discloses an X-ray source comprising an X-ray source including a high-voltage applying part for generating an X-ray projecting from a bulb part; a power supply including an insulating block molding therein a voltage generating part for supplying a voltage to the high-voltage applying part; and a metallic tubular member accommodating the bulb part and securing the X-ray tube. The metallic tubular member is secured to the outside of the insulating block. The metallic tubular member encapsulates therein an insulating liquid material for the bulb part to be dipped therein.

Abstract: X-ray therapy EPI artifact reduction and control of imaging is provided. Scanning of images is synchronized with the pulse rate of the x-rays. The scanning period is longer than the pulse rate period, so artifacts are generated within the resulting images. Due to the synchronization, the pulse variation artifacts are aligned across multiple images. The synchronization and resulting alignment of linear artifacts allows for gain correction as a function of lines within the image. Such gain correction reduces or removes non-linearities associated with pulse rate variation.

Abstract: This invention relates to an x-ray based non-intrusive inspection apparatus. An x-ray source is mounted to a gantry and provides x-rays that transmit through an object. The x-rays have an included angle between first and second shadow lines. A circle of reconstruction is formed upon rotation of the gantry having a radius from a center axis of rotation of the gantry to a closest point on the first shadow line. The second shadow line passes through the center axis so that x-rays transmit through only half of the circle of reconstruction at any given moment. The entire volume within the circle of reconstruction is scanned due to rotation of the gantry. Such an assembly allows for the x-ray source to be placed closer to the center axis of rotation of the gantry without reducing the radius of the circle of reconstruction.

Abstract: A dual-energy scanning-based radiation detecting apparatus comprises a line detector; a device for scanning said line detector across an object while said line detector is exposed to an ionizing radiation beam, which has impinged on said object, to thereby record a plurality of line images of said object; a filter device arranged in the path of said ionizing radiation beam upstream of said object to filtrate said ionizing radiation beam, the filter device being capable of operating in two operation modes having different filter characteristics; and a control device for altering operation mode of the filter device subsequent to at least every second of said line images being recorded.

Abstract: To adjust the emission rate of radiation from an X-ray tube, the value of the current of the X-ray tube is modeled empirically by a second-order polynomial function depending on the heating current and a first-order polynomial function depending on the high voltage. A transfer function gives precision closer than 3% for the adjusting of an expected tube current. This function can also be used to take account of disparities of manufacture and of the aging of the tubes in use.

Abstract: A method for X-ray analysis of a sample includes aligning an optical radiation source with an X-ray excitation source, so that a spot on the sample that is irradiated by an X-ray beam generated by the X-ray excitation source is illuminated with optical radiation generated by the optical radiation source. Optical radiation that is reflected from the sample is used to generate a first signal, which is indicative of an alignment of the spot on the sample. The X-ray beam is aligned, responsively to the first signal, so that the spot coincides with a target area of the sample. X-ray photons received from the spot on the sample, after aligning the X-ray beam, are used in generating a second signal that is indicative of a characteristic of the target area.

Abstract: An x-ray diagnostic instrument for taking an X-ray photograph of a patient includes a condition detecting device for detecting a condition of the instrument; a display device for displaying light in multicolor or flushing light; a memory device for storing predetermined display mode data of the display device for each condition of the instrument; and a control device for controlling the display device based on the display mode data stored in the memory device corresponding to a result from the condition detecting device.

Abstract: An apparatus for obtaining tomosynthesis data of an object comprises a source emitting radiation centered around an axis of symmetry; a radiation detector comprising a stack of line detectors, each being directed towards the source at a respective angle; and a device for moving the source and the radiation detector relative the object linearly in a direction orthogonal to the symmetry axis, while each of the line detectors is adapted to record line images of radiation as transmitted through the object in the respective angle. A device is provided for rotating the radiation detector around a rotation axis orthogonal to the symmetry axis, and the device for moving is further arranged to repeat the essential linear movement of the source and the radiation detector relative the object, while each of the line detectors is adapted to record a further plurality of line images of radiation as transmitted through the object.

Abstract: An x-ray support device, including a radiation source and a radiation receiver, which are both movably supported on the ceiling either via a common support or each via separate supports, in which a support has a first boom rotatable about an essentially vertical pivot axis and extending essentially horizontally, and a second boom disposed rotatably about a vertical axis and extending essentially horizontally, on which the radiation source and/or the radiation receiver are supported directly or indirectly.