97 results about "X-ray shield" patented technology

A digital radiography (20) detector has a first housing (18) having substantially the form factor of a film cassette and having a chest wall edge (C). The first housing (18) has an X-ray converter (70) with a detection array (26), each detector generating a signal according to an amount of radiation received. Readout electronics (74) are coupled with switching elements in the detection array for obtaining the signals therefrom. The readout electronics (74) include elements formed from crystalline silicon and are distributed toward outer edges of the first housing (18) and away from the chest wall edge (C). X-ray shielding selectively protects the readout electronics (74) and is located beneath a portion of the detection array. A second housing (40), electrically connected to the first housing (18) has a power source for the detector, readout and control electronics for obtaining signals provided from the detection array (26).

The invention discloses a grade-C halogen lamp. 75 to 85 percent of krypton gas, 6 to 15 percent of dibromomethane, 3 to 7 percent of nitrogen gas and 3 to 7 percent of argon gas are charged into a quartz glass bulb shell, and the charge pressure in the bulb shell is 2.5 to 3.5 atmospheres. Through an optimal halogen gas ratio and an optimal formula of auxiliary gases, the luminous flux of the lamp bulb, under the same conditions (the same voltage and constant lamp filament specifications, shape and size), can be improved by about 15 percent, the actually consumed power of the lamp bulb can be reduced by 5 to 8 percent, the actual life of the lamp bulb can be improved by 30 to 50 percent, and the X-ray shielding capacity of the lamp bulb can be improved by 20 percent. According to the data, under the same conditions, the light efficiency of the lamp can be improved considerably, energy can be saved and radiation can be reduced, so the lamp contributes to environment protection and health of human body.

A CT scanner comprising a stator and a rotor having an axis of rotation mounted to the stator so that the rotor is rotatable about the axis of rotation comprising: an X-ray source mounted to the rotor, said X-ray source having a focal spot from which X-rays emanate; an X-ray detector array comprising a matrix of rows and columns of X-ray detectors; anti-scattering (AS) material for absorbing X-rays positioned between columns of the X-ray detectors; and anti-scattering (AS) material for absorbing X-rays positioned between rows of the X-ray detectors, whereby the AS material is located between every other row and / or column of detectors, respectively. Furthermore, the thickness and / or height of the foils between rows may be different from the thickness and / or height of the foils between columns.

To reduce X-ray exposure, an area of interest is selected in the image. The image of the selected area is updated frequently, comparable to rate of updates used today for the whole image. The rest of the image is updated at a significantly lower rate. Since the area of interest normally is a small part of the overall area, the total exposure is reduced significantly. A movable X-ray shield placed near the X-ray source blocks the radiation from areas outside the area of interest. The shield automatically retracts when the complete image is updated. The area of interest can be selected by the user or automatically selected based on activity in the image.

An apparatus and method for providing an x-ray shield means in an x-ray detection system. An x-ray inhibiting container for use in a computed tomography system is provided, the container comprising: a peripheral wall; and a bottom, wherein the peripheral wall and bottom define a receiving area, and a forward portion and a rearward portion of the peripheral wall comprise an x-ray inhibiting material. The system comprising: a computed tomography scanner, configured to produce x-ray projection data as an object is passed through the computed tomography scanner, the computed tomography scanner comprising: a gantry having an opening; and an x-ray source configured to project a fan beam of x-rays towards a detector array disposed on an opposite side of the gantry opening, the x-ray source and detector array being mounted to the gantry about the opening; a structure defining an internal volume being configured to receive at least the gantry of the computed tomography scanner therein, the structure having an input opening and an outlet opening, the structure comprising an x-ray shielding material; and a motorized conveyor for passing a plurality of tubs through the input opening to the outlet opening, wherein each of the tubs comprises a peripheral wall and a bottom to define a tub volume and a forward portion and a rearward portion of the peripheral wall is configured to substantially cover the input opening or the outlet opening as the plurality of tubs are passed through the structure, wherein the forward portion and the rearward portion each comprise an x-ray shielding material.

An X-ray shield device according to one embodiment of the present invention comprises an X-ray shielding plate positioned between an X-ray source and a support member for a subject; a shielding plate driving mechanism including a supporting portion for supporting the X-ray shielding plate, the shielding plate driving mechanism being operable to move the shield plate supported by the supporting portion in a movement plane of the shielding plate perpendicular to a path of X-ray irradiation; and an X-ray shielding plate exchanging means for exchanging the X-ray shielding plate supported by the supporting portion for another X-ray shielding plate of different size.

To obtain high-directivity, stable, and high-intensity ion beam. An ion beam irradiator 10 is constituted by a combination of a laser-driven ion / electron generator 20 and an ion transporter 30 and is configured to guide ion beam with low directivity emitted from the ion / electron generator 20 to the output end while increasing the directivity of the ion beam or focusing the ion beam at the ion transporter 30. In the ion transporter 30, an electron absorber 33 is provided around a beamline 31 at a location on the upstream side in terms of the flow of the ion beam relative to multipole magnets 32. The electron absorber 33 is formed of a material (e.g., polytetrafluoroethylene (PTFE)) that can effectively absorb high-energy electrons. The electron absorber 33 is surrounded by an X-ray shield 34 made of heavy metal such as lead.

A miniaturized x-ray apparatus for delivering x-rays to a selected site within a body cavity includes a catheter having at least one lumen and an x-ray transparent window at a distal end thereof; an x-ray source in the lumen adjacent said x-ray transparent window; a movable x-ray shield positioned to direct x-rays from the source through the x-ray transparent window to the selected site.

A mobile x-ray imaging unit with an integrated x-ray shield is disclosed. The mobile x-ray imaging unit includes a base, a column structure extending upwardly from the base, a horizontal arm mounted on the column structure, and an x-ray source positioned on the horizontal arm, with the x-ray source configured to generate x-ray radiation for acquisition of an x-ray image. The mobile x-ray imaging unit also includes an x-ray shield extending upwardly from the base on a side of the column structure opposite the x-ray source that is configured to attenuate x-ray radiation generated by the x-ray source, wherein at least a portion of the x-ray shield is formed of an optically transparent material and wherein the x-ray shield is sized so as to provide x-ray shielding to an operator when the operator is in a standing position.

An x-ray shielded imaging detector is disclosed. In one embodiment, the x-ray shielded imaging detector comprises a scintillator, a photodetector, and an optical connection between the scintillator and the photodetector. The x-ray shielded imaging detector also includes a first high density shielding material adjacent the optical connection. The first high density shielding material absorbs x-ray energy and attenuates it before the x-ray energy reaches the photodetector when the x-ray energy impinges on the x-ray shielded imaging detector at an angle other than perpendicular to a major axis of the scintillator and the photodetector. Other embodiments and related methods of operating an x-ray system are also disclosed.

A two-dimensional X-ray shield grating which may be manufactured more easily and to a manufacturing method to provide therefor is provided. The method of manufacturing the X-ray shield grating includes: a first step of forming a plurality of columnar structures periodically arranged in two directions; and a second step of forming a film which surrounds at least side surfaces of the respective plurality of columnar structures, in which, in the second step, portions of the film formed on side surfaces of columnar structures which are adjacent to each other in the two directions among the plurality of columnar structures are connected to each other in the two directions, and in which the film is formed so that a columnar aperture is formed between columnar structures which are diagonally adjacent to each other with respect to the two directions among the plurality of columnar structures.