Parallel Plate Collimator for Multispot X-ray Source
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Solution Overview
Problem
Traditional x-ray imaging systems face challenges with high g-load capability and thermal distortion due to the need for extensive shielding and complex collimation in modular multispot x-ray sources, which increases costs and reduces image quality.
Innovation Solution
A cost-effective modular multispot x-ray source design incorporating a collimator system with parallel plates having apertures that form a composite opening, allowing efficient x-ray passage while minimizing shielding material and providing both X and Z-axis collimation, thereby enhancing g-load capability and image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional extensive shielding and complex collimation are used in modular multispot x-ray sources, then radiation protection is improved, but cost and device complexity increase
Solution Approach 1:
The collimation function is segmented across multiple plates (first plate, second plate, third plate) positioned at different locations. Each plate contains multiple apertures that collectively form a collimation system, distributing the collimation function across several simpler components rather than requiring a single complex collimator
Solution Approach 2:
The multiple plates with apertures serve dual functions: they provide radiation shielding (blocking harmful radiation) while simultaneously providing collimation (defining beam geometry). This multi-functionality eliminates the need for separate extensive shielding structures and complex collimation mechanisms
2Object-affected harmful factors
If traditional extensive shielding is used in modular multispot x-ray sources, then radiation protection is improved, but shielding material quantity and cost increase
Solution Approach 1:
Shielding is segmented into multiple discrete plates positioned strategically around the x-ray source and beam paths. Each plate provides localized shielding where needed, rather than requiring comprehensive shielding of the entire source region. The plates are distributed throughout the apparatus, creating shielding zones only where radiation protection is necessary
Solution Approach 2:
Shielding is applied locally at specific positions where radiation protection is required (around individual spots and beam paths) rather than uniformly throughout the entire apparatus. Each plate is positioned to shield specific radiation hazards, providing protection precisely where needed and reducing unnecessary shielding material elsewhere
3Force
If modular multispot design is used, then g-load capability is improved, but thermal distortion and image quality deteriorate
Solution Approach 1:
The x-ray source is divided into multiple discrete spots arranged in a modular configuration. Each spot generates x-rays independently, allowing the system to achieve high g-load capability through distributed weight and improved balance. The segmented design reduces thermal distortion by distributing heat generation across multiple focal spots rather than concentrating it in a single location
Solution Approach 2:
The modular multispot design simultaneously achieves multiple objectives: it provides high g-load capability (mechanical benefit) while maintaining image quality through reduced thermal distortion (quality benefit). The same modular architecture that improves mechanical performance also thermally manages the system better, demonstrating multi-functionality
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 solution reduces the need for excessive shielding, simplifies collimation, and improves image quality by allowing precise control over x-ray beams, thus enhancing the robustness and efficiency of the x-ray source while maintaining high g-load capability.
Implementation Method 1
a second plate parallelly positioned with respect to the first plate and configured to receive and attenuate a first portion of the beam of x-rays passing through the aperture in the first plate
Data Source
AI summary
A collimator includes a first plate having an aperture therein, the aperture configured to allow passage of a beam of x-rays from a source of a multi-spot source therethrough, and a second plate parallelly positioned with respect to the first plate and configured to receive and attenuate a first portion of the beam of x-rays passing through the aperture in the first plate, the second plate having an aperture therein configured to non-concentrically overlap the aperture in the first plate, to receive a second portion of the beam of x-rays passing through the aperture in the first plate, and to allow passage of the second portion of the beam of x-rays therethrough. A portion of the aperture in the first plate and a portion of the aperture in the second plate form a composite aperture parallel to the beam of x-rays, the composite aperture configured to allow passage of the second portion of the beam of x-rays through the first and second plates.