X-ray Phase Imaging System Grating Contact Prevention
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Solution Overview
Problem
Conventional X-ray phase imaging systems face challenges in confirming the disposition relationship between the subject and gratings, leading to potential contact issues during imaging, especially when the subject and gratings are moved or rotated, which can result in inaccurate phase contrast images.
Innovation Solution
An X-ray phase imaging system comprising an X-ray source, a detector, and multiple gratings, with an imaging unit that optically images the subject and one or both of the gratings, allowing users to confirm their disposition relationship and prevent contact through captured images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the subject is moved or rotated during X-ray imaging to change enlargement ratio or capture CT images, then the imaging flexibility and diagnostic capability are improved, but the risk of unexpected contact between the subject and grating increases
Solution Approach 1:
The imaging unit captures images of the subject and grating positioning structure before X-ray imaging begins. This preliminary visual confirmation allows operators to verify the spatial relationship between the subject and grating, preventing unexpected contact during subsequent subject movement or rotation operations.
Solution Approach 2:
The imaging unit provides real-time or pre-imaging visual feedback about the relative positions of the subject and grating. This feedback mechanism enables operators to adjust positioning before imaging, ensuring safe operational margins are maintained even when the subject is moved or rotated during the imaging process.
2Adaptability or versatility
If the grating is moved during X-ray imaging to perform fringe scanning or rotate for multiple phase contrast images, then the imaging capability and diagnostic information are improved, but the risk of contact with the subject increases
Solution Approach 1:
The imaging unit captures images showing the grating positioning structure and subject arrangement before grating movement or rotation begins. This preliminary visualization establishes a safety baseline, allowing operators to confirm adequate clearance exists before initiating grating motion during fringe scanning or multi-angle imaging sequences.
Solution Approach 2:
Visual feedback from the imaging unit monitors the spatial relationship between the grating and subject throughout the imaging process. This continuous or periodic feedback enables operators to detect potential contact risks early and adjust grating position or subject placement before contact occurs, maintaining imaging capability while preventing damage.
3Device complexity
If no visual confirmation system is provided for the disposition relationship between subject and grating, then the system complexity is reduced, but the accuracy of phase contrast imaging deteriorates due to unexpected contact
Solution Approach 1:
The imaging unit serves as an intermediary visual confirmation system between the operator and the subject-grating spatial relationship. Rather than requiring complex direct measurement systems, this simple optical imaging approach provides sufficient visual information about relative positioning, maintaining low system complexity while preventing contact-induced imaging errors.
Solution Approach 2:
The imaging unit creates a visual copy or representation of the subject and grating positioning. This optical copy allows operators to assess the spatial relationship without physical intervention, confirming safe positioning before X-ray imaging begins and thereby protecting imaging accuracy without adding mechanical complexity to the positioning system itself.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate confirmation of the subject-grating disposition, preventing unexpected contact and ensuring the generation of accurate phase contrast images, even during positional changes or rotations, thereby enhancing the reliability of X-ray phase imaging.
Implementation Method 1
an imaging unit that optically images the subject and one or both of the first grating and the second grating
Implementation Method 2
an X-ray source that irradiates a subject with X-rays
Implementation Method 3
a detector that detects the X-rays emitted from the X-ray source
Implementation Method 4
uses the Talbot effect to image the inside of a subject and generate a phase contrast image. This X-ray phase imaging apparatus includes a first grating which is a phase grating that is used to form a self-image through the Talbot effect
Data Source
AI summary
This X-ray phase imaging system includes a plurality of gratings including a first grating that is irradiated with X-rays from an X-ray source and a second grating that is irradiated with X-rays from the first grating. The X-ray phase imaging system includes an imaging unit that optically images a subject and one or both of the first grating and the second grating.