X-ray Phase Imaging Grating Position Switching Mechanism
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Solution Overview
Problem
Conventional X-ray phase imaging apparatuses suffer from artifacts in phase contrast images due to grating position fluctuations, requiring operators to manually remove and reposition subjects, which is burdensome and affects image quality.
Innovation Solution
An X-ray phase imaging apparatus with a position switching mechanism that automatically switches between retracted and imaging positions, allowing sequential capture of images without operator intervention, and an image processing unit that generates phase contrast images based on these positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual subject removal and repositioning is performed to suppress artifacts, then image quality is improved, but operator burden increases
Solution Approach 1:
The system performs self-correction by automatically detecting grating position deviations and compensating for them through image processing algorithms, eliminating the need for manual subject removal and repositioning by operators
Solution Approach 2:
The system implements feedback control by monitoring grating positions during imaging and using this information to correct artifacts in the final image through computational methods, creating a closed-loop system that maintains image quality without manual intervention
2Reliability
If grating position is kept fixed to avoid artifacts, then image quality is improved, but ability to perform phase contrast imaging deteriorates
Solution Approach 1:
The system dynamically adjusts grating positions during the imaging process to enable phase contrast imaging, then uses image processing to correct any position-induced artifacts, allowing the system to be both dynamic and produce high-quality images
Solution Approach 2:
The system performs preliminary grating position adjustments before imaging to optimize phase contrast detection, then applies corrective processing to eliminate artifacts, allowing optimal imaging setup without compromising image quality
3Ease of operation
If sequential imaging at retracted and imaging positions is performed, then operator burden is reduced, but imaging time increases
Solution Approach 1:
The system performs imaging at both retracted and imaging positions in continuous sequence without interrupting the overall imaging workflow, and uses parallel processing to generate final images, maintaining continuous productive action while reducing manual intervention
Solution Approach 2:
The system performs preliminary imaging at the retracted position to capture reference data, then uses this pre-captured information during subsequent imaging at the imaging position to reduce processing time and enable faster artifact correction
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
This solution reduces operator burden and minimizes grating position deviations, thereby suppressing artifacts and maintaining image quality by automating the imaging process and using sequential image capture.
Implementation Method 1
a grating for diffracting the X-rays
Implementation Method 2
by interfering X-rays emitted from an X-ray source using a plurality of gratings
Data Source
AI summary
The X-ray phase imaging apparatus includes an imaging system, a position switching mechanism for switching between a retracted position and an imaging position, a control unit for controlling switching between the retracted position and the imaging position, and an image processing unit for generating an X-ray phase contrast image based on the first image and the second image. The control unit is configured to control sequentially imaging at the retracted position and imaging at the imaging position.