Structured Plate for X-ray Backscatter Modulation
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Solution Overview
Problem
Conventional X-ray imaging detectors are heavy due to their protection layers, which is a concern for portable applications where weight reduction is desirable.
Innovation Solution
The use of a structured plate instead of a protection layer to modulate the intensity of backscattered X-ray radiation, combined with a data processing system that removes image distortions caused by this radiation, reduces the overall weight of the detector while maintaining image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a homogeneous protection layer of radiopaque material is used to absorb backscattered X-ray photons, then image quality is maintained, but the weight of the detector increases significantly
Solution Approach 1:
The homogeneous protection layer is segmented into a structured plate with multiple regions of different radiopacity. The plate contains a pattern of radiopaque elements (such as lead or tungsten structures) arranged in specific geometries, creating zones of varying X-ray absorption. This segmentation allows the plate to maintain image quality by absorbing backscattered photons while reducing overall weight compared to a solid homogeneous layer.
Solution Approach 2:
Different regions of the structured plate have different radiopaque properties tailored to local requirements. Areas requiring stronger backscatter absorption contain higher concentrations of radiopaque material, while other regions use less dense materials. This local optimization maintains necessary image quality in critical areas while minimizing weight across the entire detector surface.
2Object-affected harmful factors
If a homogeneous protection layer is used, then backscattered radiation is effectively absorbed, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The protection layer is divided into modular structured elements that can be manufactured separately and then assembled or integrated into the detector plate. This segmentation simplifies manufacturing by allowing standardization of components, easier quality control, and flexible assembly processes compared to creating a single homogeneous thick layer with precise radiopacity properties.
Solution Approach 2:
The structured plate uses composite construction combining radiopaque materials (such as lead, tungsten, or barium compounds) with radiolucent or less dense materials. This composite approach allows effective backscatter absorption through the radiopaque components while maintaining manufacturing flexibility and reducing overall material complexity compared to requiring a uniformly dense homogeneous layer.
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 structured plate significantly reduces the weight of the X-ray imaging detector while effectively mitigating image distortions caused by backscattered radiation, enhancing portability without compromising image fidelity.
Implementation Method 1
The structured plate is configured to modulate an intensity of backscattered X-ray radiation
Implementation Method 2
modulating an intensity of backscattered X-ray radiation
Implementation Method 3
The X-ray converter converts X-ray radiation into electrical charges. This conversion may be direct or indirect.
Data Source
AI summary
An X-ray imaging detector (102) is proposed, wherein the X-ray imaging detector comprises an X-ray converter (103) for converting X-ray radiation into electrical charges. The X-ray imaging detector further comprises a detector plate (104) for collecting the electrical charges generated by the X-ray converter and for generating an image. In addition, the X-ray imaging detector comprises a structured plate (105) for modulating the intensity of backscattered X-ray radiation, wherein the structured plate is arranged at a side of the detector plate opposite the side of the X-ray converter. Moreover, the X-ray imaging detector comprises a data processing system, which is configured for mitigating image distortions caused by backscattered X-ray radiation. Thereto, the data processing system uses information about the structured plate.