Multi-Source X-Ray Anti-Scatter Grid with Non-Parallel Strips
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Solution Overview
Problem
Existing multi-source X-ray imaging systems require complex mechanics and large anti-scatter grids to achieve effective scatter reduction, limiting their compactness and efficiency in 3D imaging applications.
Innovation Solution
The proposed X-ray imaging apparatus employs an anti-scatter grid with multiple sets of linear X-ray opaque strips having non-parallel longitudinal axes, allowing for a shared filtering function across multiple X-ray sources, reducing the footprint of the grid and enabling a more compact design by positioning sources at intersection points of intersecting source lines in 3D space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a traditional anti-scatter grid is used for multi-source X-ray imaging, then scatter reduction is achieved, but the grid footprint and mechanical complexity increase
Solution Approach 1:
The anti-scatter grid is divided into multiple sets of strips, where each set corresponds to a specific X-ray source. This segmentation allows each strip set to be optimized for its designated source while sharing common filtering areas, reducing the overall grid footprint and mechanical complexity required to support multiple sources
Solution Approach 2:
The grid design enables certain strip sets to serve multiple functions by being shared among different X-ray sources. Areas of the grid can be used for scatter filtering from multiple sources simultaneously, making the grid structure more versatile and reducing the total number of strips needed compared to having dedicated grids for each source
2Object-affected harmful factors
If a traditional anti-scatter grid is used for multi-source X-ray imaging, then scatter reduction is achieved, but the grid footprint and size increase
Solution Approach 1:
The grid is segmented into multiple sets of strips arranged in different orientations, where each set handles scatter from specific source directions. This allows the grid to cover the detector area more efficiently without requiring a uniformly large footprint, as each segment can be optimized for its specific angular range
Solution Approach 2:
The patent introduces angular/directional dimension to the grid design by arranging strip sets at different orientations and angles. This multi-dimensional approach allows the grid to address scatter from multiple sources without proportionally increasing the planar footprint, as the solution extends into the angular space rather than only the spatial plane
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 configuration enhances image quality by effectively reducing scatter contributions from multiple X-ray sources, allowing for a more compact and efficient 3D imaging system with reduced mechanical complexity and improved projection angle capabilities.
Implementation Method 1
an anti-scatter grid for X-ray imaging comprising at least two sets of linear x-radiation opaque strips
Data Source
AI summary
An X-ray imaging apparatus (IA) having a plurality of X-ray sources (sj) comprising an anti-scatter grid (ASG) for X-ray imaging comprising at least two sets (Mj) of linear x-radiation opaque strips (STj). Each of the strips in the at least two sets have a respective longitudinal axis (Li). There are at least two strips from different sets of the at least two sets that have non-parallel longitudinal axes.