The present disclosure relates to a method for generating an image. The method may include obtaining a preliminary image of an object. The method may include determining a plurality of point radiation sources of at least one array radiation source at least partially based on an ROI of the object. The method may include determining at least one scanning parameter associated with the plurality of point radiation sources based on the preliminary image. The method may include causing the plurality of point radiation sources to emit radiation beams to the ROI to generate scan data relating to the ROI based on the at least one scanning parameter. The method may include obtaining scan data relating to the ROI. The method may further include generating a target image of the ROI based on the scan data relating to the ROI.

An x-ray tube source is disclosed that allows differential phase shift, attenuation, and x-ray scattering features of an object to be acquired in a single exposure. Such multiplexed x-ray tube source includes multiple x-ray spot origins controlled in such a way that each slightly separated spot is temporally modulated “ON and OFF” at differing frequencies. In an x-ray interferometer system, such x-ray tube source forms multiple illumination beams of a single angular view of an object's feature but each with different interference fringe locations. A composite image can be acquired with a high frame-rate digital detector as a component element in such x-ray interferometer system. Such composite image can be subsequently de-multipexed and separately presented according to each spot-source illumination beam. Such isolated images of an object's feature, each having different fringe locations, allows for post-acquisition “fringe-mapping” analysis of the feature's full interaction with x-rays, including refraction, scattering, and absorption.

Embodiments of the present disclosure disclose a combined scanning X-ray generator, a composite inspection apparatus and an inspection method. The combined scanning X-ray generator includes: a housing; an anode arranged in the housing, the anode including a first end of the anode and a second end of the anode opposite the first end of the anode; a pencil beam radiation source arranged at the first end of the anode and configured to emit a pencil X-ray beam; and a fan beam radiation source arranged at the second end of the anode and configured to emit a fan X-ray beam; wherein the pencil beam radiation source and the fan beam radiation source are operated independently.

According to one embodiment, an X-ray tube device includes an anode target including a target surface and a cathode including a plurality of electron generation sources configured to emit the electrons, a vacuum envelope configured to house the cathode and the anode target and internally sealed in a vacuum airtight manner, and a quadrupole magnetic-field generator configured to form a magnetic field by being supplied with a current from a power source, the quadrupole magnetic-field generator being installed on an outer side of the vacuum envelope and constituted of a quadrupole surrounding a periphery of electron orbits of the electrons emitted simultaneously from each of the plurality of electron generation sources.

Various methods and systems are provided for an X-ray tube cathode focusing element. In one example, a focusing element is configured with three electron emission filaments, an integrated edge focusing, and a bias voltage. The integrated edge focusing may include a continuous single architecture with rounded edges, and a voltage of the focusing element may be negatively biased relative to a voltage of the electron emission filaments.

Various methods and systems are provided for a cathode of an X-ray imaging system. A method for fabricating the cathode comprises machining a plurality of focusing features on a focusing element and welding the focusing element to a base assembly.

A cathode head can include: a first electron emitter filament having a first size; a first grid pair defining walls of a first filament slot having the first filament therein, each grid member of the first grid pair being electronically coupled to different voltage sources; a second electron emitter filament; and a second grid pair defining walls of a second filament slot having the first electron emitter therein, each grid member of the second grid pair being electronically coupled to different voltage sources. The first grid pair can have a first and second grid members; and the second grid pair can have the second grid member and a third grid member. The first grid member and third grid member are electronically coupled to the same voltage source and the second grid member being electronically coupled to a different voltage source.

A method of designing an x-ray emitter panel 100 including the step of determining a pitch scale, r, to be used in placing x-ray emitter elements 110 on the panel 100, thereby arriving at a specific design of x-ray emitter panel 100 suitable for a specific use.

An X-ray includes: electron emission devices that are arranged in one dimension or in two dimensions and are configured to emit electrons; and an anode electrode configured to emit an X-ray by using the electrons emitted by the electron emission devices and comprising regions having irregular thicknesses.

The present invention generally relates to an x-ray source and specifically to an x-ray source suitable for large area x-ray generation. The invention also relates to a system comprising such an x-ray source.