Spiral Anti-Scatter Grid with Central Absorption Pins
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Solution Overview
Problem
Conventional anti-scatter grids in medical X-ray devices suffer from reduced image quality and resolution due to scattered radiation, which are not effectively mitigated by existing technologies, and their production can be complex and costly.
Innovation Solution
An anti-scatter grid featuring a spiral absorption lamella with strategically placed absorption pins, designed to uniformly absorb X-rays, reducing scattered radiation and enhancing image quality, while being simpler and more cost-effective to produce.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional anti-scatter grid is used, then scattered radiation is absorbed to improve image quality, but the production process becomes complex and costly
Solution Approach 1:
The patent applies a spiral configuration to the absorption lamella, transforming the conventional linear or rectangular grid structure into a curved, spiral form. This spiral design allows the absorption elements to be arranged in a continuous, flowing pattern that reduces manufacturing complexity while maintaining effective scattered radiation absorption. The curved geometry enables simpler production methods compared to conventional straight-line arrangements.
Solution Approach 2:
The anti-scatter grid is divided into distinct functional components: absorption lamella with spiral structure and absorption pins positioned in the central area. This segmentation allows each component to be optimized independently for its specific function, simplifying the overall production process while maintaining effective scattered radiation absorption throughout the grid structure.
2Ease of manufacture
If scattered radiation is not reduced, then the production process remains simple, but image quality and resolution deteriorate due to scattered radiation reaching the detector
Solution Approach 1:
The spiral configuration of the absorption lamella provides an elegant solution that maintains production simplicity through continuous forming processes while delivering superior scattered radiation absorption. The spiral geometry naturally guides and absorbs scattered radiation paths without requiring complex multi-component assemblies, thus preserving ease of manufacture while dramatically improving image resolution.
Solution Approach 2:
The patent implements local quality enhancement by positioning absorption pins specifically in the central area of the spiral structure. This localized addition targets the central region where scattered radiation paths converge, providing enhanced absorption where most needed without complicating the overall simple spiral structure. This selective reinforcement maintains production simplicity while significantly improving image quality.
3Stability of the object's composition
If a spiral absorption lamella with absorption pins is used, then homogeneous X-ray absorption is achieved, but the device structure becomes more complex
Solution Approach 1:
The spiral configuration inherently provides homogeneous absorption characteristics because the continuous curved structure uniformly distributes absorption elements across all incident angles. The spiral geometry naturally maintains consistent absorption properties throughout the grid, achieving compositional homogeneity without requiring complex multi-layer or segmented structures. The elegance of the spiral form lies in its ability to provide uniform performance through its simple continuous geometry.
Solution Approach 2:
The absorption pins in the central area provide localized enhancement that complements the spiral lamella, creating a hierarchical structure where the spiral provides overall homogeneous absorption and the central pins refine the uniformity in the critical central region. This layered approach achieves high homogeneity through a relatively simple two-level structure rather than requiring complex multi-component systems.
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
The anti-scatter grid significantly improves image quality and resolution by effectively reducing scattered radiation, allowing for lower X-ray doses and more homogeneous X-ray absorption, facilitating easier and cheaper production.
Implementation Method 1
an absorption lamella (11) for absorption of X-rays from the medical X-ray device (20) and at least one absorption pin (12) for absorption of the X-rays from the medical X-ray device (20)
Data Source
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AI summary
The invention relates to an anti-scatter grid for a medical X-ray device and the X-ray device itself. The anti-scatter grid according to the invention for a medical X-ray device comprises: - an absorption lamella configured for absorbing X-rays from the medical X-ray device, and - at least one absorption pin configured for absorbing X-rays from the medical X-ray device, - wherein the absorption lamella forms a spiral, and - wherein the spiral has a central region in which the at least one absorption pin is arranged.