The invention relates to an X-ray pre-exposure control device (10), an X-ray imaging system (1), an X-ray imaging method, and a computer program element for controlling such device and a computer readable medium having stored such computer program element. The X-ray pre-exposure control device (10) comprises a subject detection unit (11), a subject model unit (12), an interface unit (13), a processing unit (14), and a display unit (15). The subject detection unit (11) is configured to detect subject data of the subject (111) to be exposed. The subject model unit (12) is configured to provide a subject model and to refine the subject model based on the subject data into a refined subject model. The interface unit (13) is configured to provide setting data of an X-ray unit (131) to be used for exposing the subject. The processing unit (14) is configured to calculate a virtual X-ray projection (151) based on the refined subject model and the provided setting data. The display unit (15) is configured to display the virtual X-ray projection (151).

The present invention discloses an X-ray machine head and an image device, and relates to the field of X-ray image devices. The X-ray machine head comprises a high-voltage DC power supply unit, a low-voltage DC power supply unit, one or more first switch units, one or more second switch units, a central information processing unit, a housing, one or more filament power supply units, a communication unit, one or more X-ray tubes, and an insulating medium which is contained in the housing. The X-ray machine head is small in volume, which is conducive to portable applications. By directly controlling a gate of a gate-controlled X-ray tube to control the occurrence and termination of X-rays, the imaging quality is high and the radiation damage is small.

The present invention discloses an X-ray machine head and an image device, and relates to the field of X-ray image devices. The X-ray machine head comprises a high-voltage DC power supply unit, a low-voltage DC power supply unit, one or more first switch units, one or more second switch units, a central information processing unit, a housing, one or more filament power supply units, a communication unit, one or more X-ray tubes, and an insulating medium which is contained in the housing. The X-ray machine head is small in volume, which is conducive to portable applications. By directly controlling a gate of a gate-controlled X-ray tube to control the occurrence and termination of X-rays, the imaging quality is high and the radiation damage is small.

An X-ray imaging system includes an X-ray detector; a plurality of X-ray sources configured to illuminate the detector from different perspectives; a shutter in a transmission plane between each X-ray source controlling transmission of X-rays from each X-ray source to the detector; and a processor configured to receive and process X-ray data from the detector. The shutter may be configured to illuminate the detector alternately with each X-ray source. The processor may determine 3D information about an object from the processed X-ray data. Also provided are methods for processing X-ray data and different embodiments of shutters to alternately illuminate X-ray detectors.

A radiation image reading device includes: a light scanning unit; a light detection unit. Each of a transmittance when the excitation light reflected from the surface of the recording medium is transmitted through the optical filter and a transmittance when the signal light emitted from the surface of the recording medium at an angle larger than a predetermined angle with respect to a direction perpendicular to the scan line within the detection surface is transmitted through the optical filter is smaller than a transmittance when the signal light emitted from the surface of the recording medium at an angle smaller than the predetermined angle with respect to a direction perpendicular to the scan line within the detection surface is transmitted through the optical filter.

The present invention relates to an X-ray imaging apparatus which obtains an X-ray image of a subject placed between a generator and a detector by means of the rotation of the generator and the detector. The X-ray imaging apparatus comprises: the generator and the detector, which are disposed to face each other while having an object to be imaged therebetween, for irradiating and detecting an X-ray; a rotation drive unit for rotating the generator and the detector while having the object to be imaged therebetween; and a bed in which a first portion for supporting the object to be imaged is disposed between the generator and the detector. When the height of at least one from among the generator and the detector is T1, the height of the other is T2, and the height of the first portion is T3, said T1, T2, and T3 are T1>T3>T2.

Disclosed herein is an X-ray detector comprises: an X-ray absorption layer configured to absorb X-ray photons; an electronics layer comprising an electronics system configured to process or interpret signals generated by the X-ray photons incident on the X-ray absorption layer; and a temperature driver in the X-ray absorption layer or the electronics layer.

Disclosed is a coded-aperture-based dual particle image fusion apparatus that simultaneously fuses a real-time site image of a radiation source and a reaction image of gamma rays and neutrons to perform nuclide discrimination through the position of radiation, dose per second, and spectrum information, to provide numerical information of dose, and to visualize position information of gamma rays and neutrons through GPS information, whereby it is possible to secure worker safety, and that has a compact size so as to be easily carried, whereby it is possible to create a radiation distribution map based on location movement.

A method of X-ray digital image correlation is provided. The method comprises aligning cameras of an X-ray imaging system, wherein the X-ray imaging system comprises two X-ray sources pointed at a target area at a stereo angle and two corresponding X-ray detectors behind the target area. The X-ray imaging system is tuned to determine power levels of the X-ray sources that maximize image contrast and signal-to-noise ratio. The system is calibrated to determine intrinsic and extrinsic stereoscopic imaging parameters. A specimen with a random contrast pattern comprising an X-ray attenuating material is placed in the target area. Stereoscopic X-ray images are taken of the specimen and processed according to the power levels of the X-ray sources to maximize image contrast and signal-to-noise ratio and remove background objects. Kinematic quantities are determined according to changes in the contrast pattern over a number of successive images.