Systems and methods are used to increase the penetration and reduce the exclusion zone of radiographic systems. An X-ray detection method irradiates an object with X-ray fanlets including vertically moving fan beams, each fanlet having an angular range smaller than the angular coverage of the object. The fanlets are produced by modulating an X-ray beam, synchronizing the X-ray beam and the fanlets, detecting the fanlets irradiating the object, collecting image slices from the detector array corresponding to a complete scan cycle of the fanlets, and processing the image slices collected for combining into a composite image.

The present specification discloses a high speed scanning system for scanning cargo carried by rail. The system uses of a two-dimensional X-ray sensor array with, in one embodiment, a cone-beam X-ray geometry. The pulse rate of X-ray source is modulated based on the speed of the moving cargo to allow a distance travelled by the cargo between X-ray pulses to be equal to the width of the detector, for a single energy source, and to half the width of the detector for a dual energy source. This ensures precise timing between the X-ray exposure and the speed of the passing object, and thus accurate scanning of cargo even at high speeds.

The present invention relates a security screening device, comprising: a radiation generator for respectively generating X-rays and neutron beams and irradiating same toward an inspection object; an inspection object transfer unit for changing the position of the inspection object; a radiation detector configured to respectively detect X-rays and neutron beams transmitted through the inspection object; and a gamma ray detector installed adjacent to the inspection object and configured to detect a gamma signal generated from the inspection object, wherein the radiation detector acquires image information of the inspection object by using radiation information detected from the X-rays and neutron beams that have passed through the inspection object, and the gamma ray detector analyzes the detected gamma ray to detect the location of the inspection object from the analysis of the inspection object and the image information.

The present disclosure provides a spiral Computed Tomography (CT) device and a three-dimensional image reconstruction method. The spiral CT device includes: an inspection station operable to carry an object to be inspected and defining an inspection space; a rotational supporting apparatus disposed around the inspection space; a plurality of X-ray sources located on the rotational supporting apparatus; and a plurality of X-ray receiving apparatuses located on the rotational supporting apparatus and opposing to the plurality of X-ray sources respectively, wherein the plurality of X-ray sources and the plurality of X-ray receiving apparatuses are rotational synchronously with the rotational supporting apparatus, wherein the plurality of X-ray sources are closely disposed and fan-shaped X-ray beams provided by the plurality of X-ray sources cover the inspection space with a minimum degree of overlapping.

Provided is a method for determining an atom using four-color X-ray equipment capable of determining which group an atom having a greatest atomic number among atoms constituting a material belongs on the periodic table.

Various embodiments of the present invention are directed toward systems and methods relating to security screening. For example, a screening system includes a chamber configured to accommodate a user to be screened, and a chamber scanner. The chamber scanner is configured to scan the user to identify whether the user is carrying an undivested item that needs to be divested. The chamber is configured to release the user to proceed from the chamber to a secure area, upon confirmation that no undivested items are to be divested.

A method for optimising detector performance in a dual-energy detector system including high-energy X-ray detection and low-energy X-ray detection. The method includes one or more steps from a group including: utilising different scanning rates for high-energy X-ray detection and low-energy X-ray detection; utilising different integration times for high-energy Xray detection and low-energy X-ray detection; and/or utilising different diode sizes for high-energy X-ray detection and low-energy X-ray detection.

Disclosed is a dual-energy X-ray detector having a first detector line with first detector elements and a second detector line with second detector elements arranged parallel thereto, the detector lines being arranged parallel to one another in the line direction and being arranged one behind the other in the direction of the X-ray beams to be detected in such a manner that the projection of the first and the second detector lines in the direction of one of the X-ray beams to be detected, which passes through the surface center of gravity of a reference detector element of the first or the second detector line, are overlappingly offset from each other by an effective offset (Dx; Dy). Further disclosed is an X-ray inspection apparatus including such a detector and methods for processing detector data provided by means of the detector.

A drive-through scanning system comprises a radiation generating means arranged to generate radiation at two different energy levels and direct it towards a scanning volume, detection means arranged to detect the radiation after it has passed through the scanning volume, and control means arranged to identify a part of a vehicle within the scanning volume, to allocate the part of the vehicle to one of a plurality of categories, and to control the radiation generating means and to select one or more of the energy levels depending on the category to which the part of the vehicle is allocated.

The present specification discloses a covert mobile inspection vehicle with a backscatter X-ray scanning system that has an X-ray source and detectors for obtaining a radiographic image of an object outside the vehicle. The systems preferably include at least one sensor for determining a distance from at least one of the detectors to points on the surface of the object being scanned, a processor for processing the obtained radiographic image by using the determined distance of the object to obtain an atomic number of each material contained in the object, and one or more sensors to obtain surveillance data from a predefined area surrounding the vehicle.