A method for optimizing CT scanning parameter is disclosed. A target group may be generated from a plurality of reference information samples. Each of the reference information samples may include subject information, information indicating a scanning protocol, one or more scanning parameter values and information indicating reconstructed image quality; the target group can consist of one or more reference information samples with the same subject information and the same scanning protocol. A scanning parameter optimization may be performed according to reconstructed image qualities and scanning parameter values of reference information samples in the target group, so as to acquire a target scanning parameter value of the target group. And according to the target scanning parameter value, a reference X-ray irradiation dose corresponding to the scanning protocol and the subject information of the target group may be determined.

The present disclosure discloses an inspection device, an inspection method and an inspection system. The device comprises a distributed ray source comprising multiple source points; a light source collimator configured to converge the rays generated by the distributed ray source to form an inverted fan-shaped ray beam; a scatter collimator configured to only allow rays scattered at one or more particular scattering angles which are generated by the rays from the light source collimator interacting with inspected objects to pass; at least one detector each comprising multiple detection units which have an energy resolution capability and are substantially arranged in a cylindrical surface to receive the scattered rays passing through the scatter collimator; and a processing apparatus configured to calculate energy spectrum information of the scattered rays from the inspected objects based on a signal output by the detectors.

The present invention relates to a method and apparatus for detecting radioactivity. In particular, but not exclusively, the present invention relates to the detection of radioactivity in a target fluid in a fluid communication passageway using a region of scintillator material (130) to provide light responsive to the presence of radioactive material and at least one silicon photomultiplier (SiPM) (150) for providing an output signal responsive to the light provided by the scintillator material.

An X-ray inspection system that can simply and automatically perform aging without separately preparing a shutter moving member including a dedicated motor or a guide member for aging is provided. When power is supplied, a stage moves in X and Y directions by activating a stage moving mechanism, and an X-ray source stops at an aging position below an X-ray shielding plate disposed beside a support plate on the stage. In this state, aging is started. When the aging is ended, an input of an imaging instruction for X-ray imaging is waited for.

An X-ray inspection system that can simply and automatically perform aging without separately preparing a shutter moving member including a dedicated motor or a guide member for aging is provided. When power is supplied, a stage moves in X and Y directions by activating a stage moving mechanism, and an X-ray source stops at an aging position below an X-ray shielding plate disposed beside a support plate on the stage. In this state, aging is started. When the aging is ended, an input of an imaging instruction for X-ray imaging is waited for.

A plastic scintillating fiber capable of reducing modal dispersion and improving the accuracy of identifying a position which radiation passes through. A plastic scintillating fiber includes a core and a cladding that covers an outer periphery of the core and has a lower refractive index than the core. The core uniformly contains a radiation-emitting fluorescent agent and has a refractive index distribution where the refractive index of the core is highest at a center of a cross-section and becomes lower in a parabolic manner with distance from the center toward an outer periphery.

Disclosed is an edge-on photon counting detector and a method for manufacturing a charge collecting side of such detector. The edge-on photon counting detector comprises a semi-conducting substrate. The semi-conducting substrate comprises, a first end adapted to face an x-ray source and a second end opposite the first end in the direction of incoming x-rays, and at least one strip having N depth segments, N2, each of the depth segments comprising a charge collecting metal electrode and a charge collecting side comprising doped regions and insulating regions, wherein each of the charge collecting metal electrodes is arranged over a corresponding doped region and is connected to a respective routing trace arranged on the insulating regions, the respective routing trace being adapted to conduct signals from the charge collecting metal electrode to a read-out pad E, connectable to front-end electronics, arranged at the second end.

A radiation detector for combined detection of low-energy radiation quanta and high-energy radiation quanta has a multi-layered structure. A rear scintillator layer (5) is configured to emit a burst of scintillation photons responsive to a high-energy radiation quantum being absorbed by the rear scintillator layer (5). A rear photosensor layer (6) attached to a back side of the rear scintillator layer (5) is configured to detect scintillation photons generated in the rear scintillator layer (5). A front scintillator layer (3) arranged in front of the rear scintillator layer (5) opposite the rear photosensor layer (6) is configured to emit a burst of scintillation photons responsive to a low-energy radiation quantumbeing absorbed by the front scintillator layer (3). A front photosensor layer (2) attached to a front side of the front scintillator layer (3) opposite the rear scintillator layer (5) is configured to detect scintillation photons generated in the front scintillator layer (3). The high-energy radiation quantum is a gamma ray and the low-energy radiation quantum is an X-ray.

The invention provides a technique inhibiting entry of moisture to an active matrix substrate included in an X-ray imaging device.

An active matrix substrate includes, in each of the pixels, a photoelectric conversion element including a pair of electrodes and a semiconductor layer provided between the pair of electrodes, a first flattening film configured as an organic resin film and covering the photoelectric conversion element, and a first inorganic insulating film covering the first flattening film. The first flattening film and the first inorganic insulating film are provided to extend outside the pixel region. Outside the pixel region, the first flattening film is covered with the first inorganic insulating film to prevent exposure of the first flattening film.

The invention relates a photon counting device and method for counting photon interactions in a piece of converter material and addressing the issue of charge sharing. The occurrence of a charge sharing event is already detected upon the onset of the pulse, taking into consideration an onset of a pulse in a neighboring pixel within a preferably very short coincidence window. According to the invention, it is detected whether a pulse is being processed and one or more neighboring pixels are scouted to decide whether a simultaneous interaction has been registered within a very short coincidence window.