Radiation Imaging Apparatus Shielding via Localized Support Base
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Solution Overview
Problem
Portable radiation imaging apparatuses face challenges in maintaining image quality due to scattered radiation, which is exacerbated by the weight and bulk of traditional radiation shielding materials, impairing portability and image fidelity.
Innovation Solution
A radiation imaging apparatus design featuring a radiation detection panel, a support base, internal structures, and fixing members with controlled radiation shielding efficiency, where the difference in shielding efficiency between the fixing members and the support base is less than 50%, and no high-efficiency shielding sheet is placed on the back surface of the detection panel, utilizing lightweight materials for the housing to maintain portability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal plate material having high radiation shielding property such as lead is used as the radiation shield, then the radiation shielding property is improved, but the total weight of the radiation imaging apparatus increases
Solution Approach 1:
The patent applies local quality by making the support base have a radiation shielding efficiency of 50% or more specifically in the region corresponding to the imaging element, while other parts of the apparatus can use lighter materials. This localized approach provides adequate shielding where needed without unnecessarily increasing the overall weight of the apparatus.
Solution Approach 2:
The patent changes the parameter of radiation shielding efficiency to be less than 100% (specifically 50% or more) rather than using maximum shielding materials throughout. This parameter optimization allows sufficient suppression of scattered radiation while reducing the weight compared to using high-density lead plates throughout the entire apparatus.
2Reliability
If a radiation shield is disposed to cover the entire imaging element region, then the incidence of scattered radiation to the imaging element is shielded, but the portability of the portable radiation imaging apparatus is impaired
Solution Approach 1:
The support base is designed with localized radiation shielding properties specifically in the region corresponding to the imaging element, rather than covering the entire imaging element region with heavy shielding material. This provides adequate scattered radiation suppression while maintaining portability.
Solution Approach 2:
The patent uses composite material structures where the support base integrates radiation shielding functionality with structural support. This combination allows effective scattered radiation suppression without requiring separate heavy shielding components that would impair portability.
3Measurement precision
If the radiation shielding efficiency is increased to suppress scattered radiation, then the image quality is improved, but the weight of the apparatus increases
Solution Approach 1:
The patent optimizes the radiation shielding efficiency parameter to be 50% or more for the support base in the imaging element region, which is sufficient to suppress scattered radiation and maintain image quality without requiring 100% shielding efficiency that would necessitate heavy materials.
Solution Approach 2:
The radiation shielding is localized to the specific region of the support base that corresponds to the imaging element, providing adequate image quality where needed while using lighter materials in other regions, thus balancing image quality and weight.
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 effectively suppresses image quality deterioration from scattered radiation without increasing the weight of the apparatus, ensuring high-quality images while maintaining portability.
Implementation Method 1
a radiation detection panel which is included in a housing, configured to detect incident radiation as an electrical signal related to a radiation image
Implementation Method 2
the difference in the radiation shielding efficiency between at least one of the plurality of fixing members and the support base is less than 50%
Data Source
AI summary
Disclosed apparatus comprises: a radiation detection panel in a housing, for detecting incident radiation as an electrical signal related to a radiation image; a support base in the housing and located on a side opposite to a radiation incident surface, for supporting the radiation detection panel from a back surface side; an internal structure in the housing and disposed on the back side surface of the support base; and fixing members in the housing, for fixing the internal structure to the support base, the difference in the radiation shielding efficiency between at least one of the fixing members and the support base is less than 50%, and when viewed from a radiation incident direction, a sheet like member having a radiation shielding efficiency of 50% or more is not arranged on a region on the back surface side of the radiation detection panel overlapping with the fixing member.