X-ray source for wide-field X-ray phase-contrast imaging

A phase-contrast imaging and X-ray technology, which is applied in the X-ray tube parts, X-ray tube electrodes, X-ray tube target geometry, etc., can solve the limitation of the imaging field of view of the array structure X-ray source, which is difficult to apply to large Field of view X-ray phase contrast imaging, complex source grating manufacturing and other issues, to avoid process problems, high spatial coherence, and low manufacturing cost
CN102768931BActive Publication Date: 2015-05-06SHENZHEN UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
SHENZHEN UNIV
Publication Date
2015-05-06

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Abstract

The invention discloses an X-ray source for wide-field X-ray phase-contrast imaging. The X-ray source comprises an electronic source for emitting electronic beams and an anode target for emitting X rays in response to incidence of the electronic beams, wherein the anode target is an integrated column body; an emission surface is formed at the top end of the anode target and consists of a plurality of stepwise distributed oblique emission surface units which are parallel to each other; the included angle alpha between the emission surface of the anode target and the inter-step side wall between the adjacent emission surface units is 50-120 degrees; and the included angle beta between the inter-step side wall and a principal optic axis of the emission surface of the anode target is not less than 90 degrees. The X-ray source for wide-field X-ray phase-contrast imaging can be applied to wide-field X-ray phase-contrast imaging, can overcome the field limitation of an anode of an array structure, and is low in manufacturing cost and simple and reliable in manufacturing process.
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Description

technical field

[0001] The invention belongs to the technical field of X-ray phase-contrast imaging, and relates to an X-ray source, in particular to an X-ray source for large-field X-ray phase-contrast imaging. Background technique

[0002] X-ray imaging technology is a non-destructive testing technology that has been widely used in chemical, agricultural, biological, medical and security inspection fields. The physical mechanism of traditional X-ray imaging technology is to obtain the internal information of objects through different attenuation of X-rays passing through objects with different thicknesses and different material compositions. For substances with a large atomic number (such as heavy metals, human bones), a clear image can be obtained due to the large absorption of X-rays. However, for substances composed of light elements (such as C, H, O, N), such as soft tissues of the human body, living biological samples, optical fibers, solid deuterium-tritium fuel, ga...

Claims

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