Collimator with Solid Transmission Section for Scattered Radiation Removal
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Solution Overview
Problem
Existing radiation inspection devices, such as X-ray CT devices, fail to completely remove scattered radiation, leading to reduced detection accuracy and the need for additional collimator structures that complicate production and increase costs.
Innovation Solution
A collimator with a radiation blocking section made of tin and radiation transmission sections made of carbon or other low-blocking materials, integrated through a casting process, which effectively blocks scattered radiation while allowing direct conversion to electrical signals without separate light-blocking structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional collimators with through holes are used to remove scattered radiation, then detection accuracy is improved, but scattered radiation is not completely removed and device complexity increases
Solution Approach 1:
The invention changes the physical state of the radiation blocking material from solid to liquid, allowing the collimator to be formed by pouring liquid blocking material into a mold with through holes. This parameter change simplifies the manufacturing process and eliminates the need for complex through-hole drilling while maintaining the scattered radiation removal function.
Solution Approach 2:
The invention uses liquid radiation blocking material that can be poured and flowed into the collimator structure, applying hydraulic principles to simplify the formation of the collimator. The liquid material fills the mold cavity and hardens to form the final structure, eliminating complex machining operations.
2Measurement precision
If conventional collimators with through holes are used to remove scattered radiation, then detection accuracy is improved, but manufacturing complexity and costs increase
Solution Approach 1:
The invention changes the physical state of the radiation blocking material from solid to liquid, allowing the collimator to be formed by pouring liquid blocking material into a mold with through holes. This parameter change simplifies the manufacturing process and eliminates the need for complex through-hole drilling while maintaining the scattered radiation removal function.
Solution Approach 2:
The invention incorporates light-blocking plates into the mold before pouring the liquid radiation blocking material. This preliminary action ensures that light is blocked during the manufacturing process itself, eliminating the need for separate light-blocking structures in the final product and simplifying the overall manufacturing process.
3Measurement precision
If solid radiation transmission sections are used in the collimator, then scattered radiation is effectively removed, but production complexity increases due to integrated light-blocking requirements
Solution Approach 1:
The invention incorporates light-blocking plates into the mold before pouring the liquid radiation blocking material. This preliminary action ensures that light is blocked during the manufacturing process itself, eliminating the need for separate light-blocking structures in the final product and simplifying the overall manufacturing process.
Solution Approach 2:
The invention combines the light-blocking function and radiation blocking function into a single integrated manufacturing step. By incorporating light-blocking plates into the mold and pouring liquid blocking material that hardens in place, the invention merges multiple functions into one structure, eliminating the need for separate light-blocking plates and reducing production complexity.
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 collimator enhances detection accuracy by removing scattered radiation, simplifies production, and reduces costs by eliminating the need for light-blocking plates and complex through-hole drilling.
Implementation Method 1
a radiation blocking section (22), and a radiation transmission section (21) that has a lower radiation blocking rate than the radiation blocking section
Implementation Method 2
a radiation transmission section (21) that has a lower radiation blocking rate than the radiation blocking section (22), penetrates the radiation blocking section (22), and is solid
Data Source
Figure 1
Figure 2
Figure 3A~3E
AI summary
Provided are a collimator, a radiation detection device, and a radiation inspection device that are capable of further removing scattered radiation. This collimator 20 comprises: a radiation blocking section 22; and a radiation transmission section 21 that has a lower radiation blocking rate than the radiation blocking section 22, penetrates the radiation blocking section 22, and is solid. The X-ray transmission section 21 of the collimator 20 is solid therefore X-rays on the low-energy side that have been scattered by a subject B in the X-ray transmission section 21 are absorbed, as a result of this collimator 20. Accordingly, there is little noise contained in X-rays detected by a radiation detection element 30 and a high-resolution X-ray image can be obtained.