Focus Detector Arrangement for Generating Phase-Contrast X-Ray Images and Method for This

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This patent describes a specialized focus-detector arrangement and method for generating projective or tomographic phase-contrast X-ray images. Unlike conventional X-ray systems, it creates a bundle of coherent X-rays using an anode with strip-shaped areas of varying radiation emission aligned parallel to the phase grating, enabling improved phase-contrast imaging. The invention covers both the apparatus design and the associated imaging method.

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• Medical imaging for soft tissue differentiation using phase-contrast computed tomography (CT) or radiography
• Biological and material research requiring detection of minute compositional differences
• Non-destructive testing and inspection of industrial components
• Advanced imaging in security applications to differentiate materials based on phase shifts
• Combination imaging systems for both conventional absorption-based and phase-contrast X-ray imaging

BenefitsContent extracted from patent full text and abstract with AI.

• Improves contrast and detail in X-ray images, especially for materials or tissues with low absorption differences, such as soft tissues
• Enables phase-contrast imaging with standard-size X-ray tubes, not requiring synchrotron sources or highly specialized equipment
• Enhances dose efficiency by reducing unnecessary patient radiation exposure and minimizing background noise
• Offers flexible and precise electronic control of the X-ray source characteristics without complex mechanical moving parts
• Allows for both conventional absorption imaging and advanced phase-contrast imaging with a single system
• Improves the ability to distinguish similar materials or tissues in imaging applications

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Inventors & Applicants

Patent Abstract

The invention relates to a focus detector arrangement of an X-ray apparatus (1) for generating projective or tomographic phase-contrast images of an examination object (7, P), wherein a bundle of coherent X-rays (Si) is generated by an anode (12) that has areas (13) of different radiation emission arranged in strips and extending parallel to the grid lines of the phase grid (G1) of the focus detector arrangement. In addition, the invention also relates to a method for generating projective or tomographic X-ray phase-contrast images of an examination object with the aid of such a focus detector arrangement, wherein a bundle of coherent radiation is generated by an anode (12) that has areas (13) of different radiation emission arranged in strips and extending parallel to the grid lines of the phase grid (G1).