A system and method for determining the strength of a bond joining a composite structure is provided. The system includes a gas gun produces a short gas pulse directed normal to a surface of the composite structure and that creates a compression wave through the composite structure; a monochromatic x-ray system produces a monochromatic x-ray that is incident at an angle to the surface and that passes through the composite structure; a scintillator screen receives transmitted x-rays that pass through the composite structure; a mirror receives and magnifies radiation emitted from the scintillator screen; a detector receives the radiation from the scintillator screen; an electronic processor configured to process the radiation detected by the detector; and a synchronization controller configured to synchronize operation of the gas gun, the monochromatic x-ray system, and the detector.

The present disclosure directs to a system and method for CT imaging. The method may include acquiring computed tomography (CT) data, wherein the CT data is generated by scanning a subject using a CT scanner, the CT scanner including a focal spot and a detector, and the detector including a plurality of detector units. The method may also include obtaining a forward projection model and a back projection model, wherein the forward projection model and the back projection model are associated with sizes of the detector units and a size of the focal spot of the CT scanner. The method may further include reconstructing a CT image of the subject iteratively based on the CT data, the forward projection model, and the back projection model.

A system and method for determining the strength of a bond joining a composite structure is provided. The system includes a gas gun produces a short gas pulse directed normal to a surface of the composite structure and that creates a compression wave through the composite structure; a monochromatic x-ray system produces a monochromatic x-ray that is incident at an angle to the surface and that passes through the composite structure; a scintillator screen receives transmitted x-rays that pass through the composite structure; a mirror receives and magnifies radiation emitted from the scintillator screen; a detector receives the radiation from the scintillator screen; an electronic processor configured to process the radiation detected by the detector; and a synchronization controller configured to synchronize operation of the gas gun, the monochromatic x-ray system, and the detector.

X-ray scatter simulations to correct computed tomography (CT) data can be accelerated using a non-uniform discretization of the RTE, reducing the number of computations without sacrificing precision. For example, a coarser discretization can be used for higher-order/multiple-scatter flux, than for first-order-scatter flux. Similarly, precision is preserved when coarser angular resolution is used to simulate scatter within a patient, and finer angular resolution used for the scatter flux incident on detectors. Finer energy resolution is more beneficial at lower X-ray energies, and coarser spatial resolution can be applied to regions exhibiting less X-ray scatter (e.g., air and regions with low radiodensity). Further, predefined non-uniform discretization can be learned from scatter simulations on training data (e.g., a priori compressed grids learned from non-uniform grids generated by adaptive mesh methods).

An X-ray detecting panel for multi signal detection and an X-ray detector thereof are disclosed. In accordance with one embodiment, the X-ray detecting panel for multi signal detection may include a plurality of unit pixels, the unit pixel including: a photodiode for generating an electrical signal by radiated light; and a thin film transistor for processing the electrical signal generated in the photodiode, wherein the unit pixel may include at least two photodiodes or at least two thin film transistors. In accordance with the present embodiment, a plurality of photodiodes is provided in the unit pixel in a single X-ray detector, thus it is possible that an X-ray image is output using a signal output from each photodiode, and multi signals are detected using the single X-ray detector.

A foreign object inspection device is provided. The device reduces the risk of a failure to detect a foreign object. A direction normal to a principal surface is inclined with respect to a direction in which an intensity of electromagnetic waves emitted from an electromagnetic wave generating source is greatest.

Various aspects include methods compensating for Compton scattering effects in pixel radiation detectors. Various aspects may include determining whether gamma ray detection events occurred in two or more detector pixels within an event frame, determining whether the detection events occurred in detector pixels within a threshold distance of each other in response to determining that detection events occurred in two or more detector pixels within the event frame, and recording the two or more detection events as a single detection event having an energy equal to the sum of the measured energies of the two or more detection events located in the detector pixel having a highest measured energy in response to determining that the detection events occurred in detector pixels within the threshold distance of each other.

X-ray scatter simulations to correct computed tomography (CT) data can be accelerated using a non-uniform discretization of the RTE, reducing the number of computations without sacrificing precision. For example, a coarser discretization can be used for higher-order/multiple-scatter flux, than for first-order-scatter flux. Similarly, precision is preserved when coarser angular resolution is used to simulate scatter within a patient, and finer angular resolution used for the scatter flux incident on detectors. Finer energy resolution is more beneficial at lower X-ray energies, and coarser spatial resolution can be applied to regions exhibiting less X-ray scatter (e.g., air and regions with low radiodensity). Further, predefined non-uniform discretization can be learned from scatter simulations on training data (e.g., a priori compressed grids learned from non-uniform grids generated by adaptive mesh methods).

In an analysis system in which a plurality of analysis apparatuses and a server are communicably connected, the plurality of analysis apparatuses each includes: an apparatus body that measures a sample; and an information processor that analyzes measurement data by the apparatus body. The information processor has a first storage unit for storing the measurement data and an analysis result of the measurement data, generates an analysis result summary based on the analysis result stored in the first storage unit, the analysis result summary indicating an outline of the analysis result, and transmits the analysis result summary to the server. The server has a second storage unit, and constructs a database in which analysis result summaries received from the information processor are accumulated, and stores the database into the second storage unit.

An x-ray imaging system includes an x-ray source and detector. The detector is a photon counting x-ray detector, enabling detection of photon-counting events. The system acquires at least one phase contrast image based on photon-counting events. The detector includes x-ray detector sub-modules, also referred to as wafers, each including detector elements. The sub-modules are oriented in edge-on geometry with their edge directed towards the x-ray source, assuming the x-rays enter through the edge. Each sub-module or wafer has a thickness with two opposite sides of different potentials to enable charge drift towards the side, where the detector elements/pixels, are arranged. The system estimates charge diffusion from a Compton interaction or an interaction through photoeffect related to an incident x-ray photon in a sub-module or wafer of the x-ray detector, and estimates a point of interaction of the x-ray photon sub-module based on the determined estimate of charge diffusion.