An X-ray imaging system using multiple pulsed X-ray sources in motion to perform high efficient and ultrafast 3D radiography using an X-ray flexible curved panel detector is presented. There are multiple pulsed X-ray sources mounted on a structure in motion to form an array of sources. The sources move simultaneously relative to an object on a predefined arc track at a constant speed as a group. Each individual X-ray source can move around its static position at a small distance. When an individual source has a speed equal to group speed, but with opposite moving direction, the individual source and detector are activated. This allows source to stay relatively standstill during activation. The operation results in reduced source travel distance for each individual source. 3D radiography image data can be acquired with much wider sweep angle in much shorter time, and image analysis can also be done in real-time.

The disclosure relates to a system and method for tracking and correcting X-ray focus positions in a computed tomography (CT) device. The device may include an X-ray tube, a collimator, and a detector. The collimator may include an opening, wherein the collimator has a width in a first direction and a length in a second direction. The opening may have an opening width in the width direction of the collimator, and an opening at at least one end of the collimator in the second direction may have an opening width smaller than that of an opening within the middle section of the collimator.

An x-ray tomography system which can generate a qualitative 3D image of a region of interest using a an x-ray source, the x-ray source configured to emit x-ray radiation at the region of interest. The x-ray radiation or the x-ray source or the relative position of the x ray source configured to be moved in a two dimensional plane. An x-ray detector including a plurality of detector elements arranged in a two dimensional plane opposite the x-ray source, the x-ray detector configured to detect x-ray radiation after attenuation by the subject and provide an indication of the detected x-rays. And a processor configured to receive the indication of the detected x-rays and resolve the detected x-ray radiation into a three dimensional image. The three dimensional image is qualitative in nature.

Disclosed herein is an x-ray interferometer for x-ray phase contrast imaging including an x-ray source, an x-ray source grating, two x-ray phase gratings, an x-ray analyzer grating and an x-ray detector. An alternative interferometer includes a periodically structured x-ray source, two x-ray phase gratings, an x-ray analyzer grating and an x-ray detector. The phase gratings are placed much closer to the x-ray detector than to the x-ray source and the image object is positioned upstream and close to the phase gratings to achieve high sensitivity and large field-of-view simultaneously.

A computer tomograph includes a static radiator-detector ring, which is constructed from an odd number of radiator-detector elements, of which a single one is displaceable, with opening of the radiator-detector ring. The displaceable element the other radiator-detector elements together defining a C-shape. Each radiator-detector element has an anode arrangement for the emission of X-rays, which extends over an angle α of at least 0.9×360°/n on the circumference of the radiator-detector ring. A detector is provided for detection of X-ray radiation, which extends within the same radiator-detector element over an angle β of at least 0.95×360°/n. Each anode arrangement is part of a radiator arrangement including multiple electron emitters, in which each electron emitter is configured, in cooperation with an electrode arrangement, to generate a focal spot at one of at least three selectable positions on the anode arrangement.

An X-ray imaging system with multiple pulsed X-ray source tubes in motion to perform highly efficient and ultrafast 3D radiography is presented. There are multiple X-ray tubes from pulsed sources mounted on a structure in motion to form an array of X-ray tubes. The tubes move simultaneously relative to an object on a pre-defined arc track at a constant speed as a group. Each individual X-ray tube in each individual source can also move rapidly around its static position in a small distance. When a tube has a speed that is equal to group speed but with opposite moving direction, the tube and X-ray flat panel detector are activated through an external exposure control unit so that the tube stay momentarily standstill. It results in much reduced travel distance for each X-ray source tube and much lighter load for motion system. 3D X-ray scan can cover much wider sweeping angle in much shorter time and image analysis can also be done in real time.

The disclosure relates to a system and method for tracking and correcting X-ray focus positions in a computed tomography (CT) device. The device may include an X-ray tube, a collimator, and a detector. The collimator may include an opening, wherein the collimator has a width in a first direction and a length in a second direction. The opening may have an opening width in the width direction of the collimator, and an opening at at least one end of the collimator in the second direction may have an opening width smaller than that of an opening within the middle section of the collimator.

An x-ray imaging apparatus and associated methods are provided to execute multi-pass imaging scans for improved quality and workflow. An imaging scan can be segmented into multiple passes that are faster than the full imaging scan. Data received by an initial scan pass can be utilized early in the workflow and of sufficient quality for treatment setup, including while the another scan pass is executed to generate data needed for higher quality images, which may be needed for treatment planning. In one embodiment, a data acquisition and reconstruction technique is used when the detector is offset in the channel and/or axial direction for a large FOV during multiple passes.

A system and method relating to a radiation based imaging are provided. The system may include a radiation source, a detector, a first grid, and a second grid. The detector may include a plurality of detector cells. The first grid may be located between the radiation source and the detector and include a plurality of first radiation transmitting sections. The second grid may be located between the first grid and the detector and include a plurality of second radiation transmitting sections. An extending direction of at least one of the plurality of first radiation transmitting sections may be different from that of at least one of the plurality of second radiation transmitting sections.

Multimodal imaging apparatus and methods include a rotatable gantry system with multiple sources of radiation comprising different energy levels (for example, kV and MV). Fast slip-ring technology and helical scans allow data from multiple sources of radiation to be combined or utilized to generate improved images and workflows, including for IGRT. Features include large field-of-view (LFOV) MV imaging, kV region-of-interest (ROI) imaging, and scalable field-of-view (SFOV) dual energy imaging.