11943results about "Material analysis by transmitting radiation" patented technology

A radiographic imaging device includes an X-ray source having a finite focal spot characterized by a determined intensity distribution. The X-ray source emits a beam of X-ray radiation toward an object. A detector assembly receives at least part of the X-ray radiation after it passes through the object. The detector assembly produces a signal in response to the received radiation. An image processor constructs an image from the signal generated by the detector assembly using the determined intensity distribution of the X-ray source. By inverse filtering the aggregated detector image from the detector assembly, the effects of the finite focal spot size of the X-ray source are mitigated, improving the quality of the resulting image.

A detection system for detecting sheets of material includes a device for moving along a path a container which can harbor a sheet of material sought to be detected; an X-ray scanner having a beam for scanning across the path of the container through a predetermined angle and a device for moving the scanner to shift the origin of the scanning beam to align during at least a portion of the scan the scanning beam with the sheet for producing a high projected density contrasted with its surroundings.

A system and method for inspecting an object with multiple sources of penetrating radiation. Irradiation of the inspected object by the sources is temporally sequenced such that the source of detected scattered radiation is unambiguous. Thus, multiple views of the inspected object may be obtained and image quality may be enhanced, even in a compact geometry in which the beams are substantially coplanar.

A system and method for generating CT-type three dimensional imaging information from a conventional C-arm fluoroscope system. This enables the adaptation of widely used C-arm installations to provide CT-type information. The system uses a three dimensional target disposing in a fixed position relative to the subject, and obtains a sequence of video images of a region of interest of a subject while the C-arm is moved manually or by a scanning motor. Images from the video sequence are analyzed to determine the pose of the C-arm relative to the subject by analysis of the image patterns of the target. Images are selected from the video sequence according to predetermined criteria. A set of two-dimensional image data with associated positional data is obtained, which is used to reconstruct a three dimensional volumetric set of imaging data of the region of interest of the subject.

A method and system is provided for registering a 2D radiographic image of a target with previously generated 3D scan data of the target. A reconstructed 2D image is generated from the 3D scan data. The radiographic 2D image is registered with the reconstructed 2D images to determine the values of in-plane transformation parameters (x, y, θ) and out-of-plane rotational parameters (r, Φ), where the parameters represent the difference in the position of the target in the radiographic image, as compared to the 2D reconstructed image. An initial estimate for the in-plane transformation parameters is made by a 3D multi-level matching process, using the sum-of-square differences similarity measure. Based on these estimated parameters, an initial 1-D search is performed for the out-of-plane rotation parameters (r, Φ), using a pattern intensity similarity measure. The in-plane parameters (x, y, θ) and out-of-plane parameters (r, Φ) are iteratively refined, until a desired accuracy is reached.

A vehicle-carried mobile container inspection apparatus characterized in that the mobile container inspection apparatus comprises a first box-shaped cabin arranged in the front portion of the chassis and provided with a workroom accommodating a scan control module, an image acquisition module and an operation / inspection module; and a second box-shaped cabin and a third box-shaped cabin both arranged on the rear portion of the rotatable platform, in which the second box-shaped cabin is arranged on the top of the third box-shaped cabin, the control unit of the radiation source is accommodated in the second box-shaped cabin, the third box-shaped cabin is arranged under the rotatable platform, the radiation source is arranged in the third box-shaped cabin, the level of the radiation source from which the X-ray beam emit is arranged below the level of the chassis, the scanning vehicle is provided with a driving means to smoothly move the scanning vehicle the rotatable platform is provided with a rotatably driving means, when inspecting a container, the rotatable platform is driven to turn 90 degrees, and the second arm turns into its vertical gesture, so that a portal-shaped frame is formed by means of the parallelogrammical bracket, the first arm and the second arm. The mobile inspection container apparatus is capable of inspecting as broad area as to reach the vehicle chassis. The apparatus comprises two vehicles, in which usually the both vehicles are used, while only one vehicle is used for fulfilling the inspection work in emergency.

The present invention relates to an examination apparatus for providing information about an object and a method for providing information about an object of interest. In order to improve the visual reception of information relating to the object, an examination apparatus is provided that comprises an examination arrangement and a control unit with at least a first interface and a second interface. The examination arrangement is adapted to detect object data from at least one region of interest of an object and to provide the object data to the control unit. Further, the control unit is adapted to compute object data into object information and to transform at least a part of the object information into image data (32, 36). Further, the control unit is arranged to extract pre-determined indicative data from the object information and to transform the indicative data into graphical advisory data (40). The first interface is configured such to provide the image data to a display unit (20) in order to display the image data (32, 36) to the user. The second interface is configured such to provide a signal for an ambient advice display arrangement in order to provide the graphical advisory data (40) to the user.