Multilayer Staggered Coupling Collimator for SPECT Resolution
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Solution Overview
Problem
Current SPECT systems have limited spatial resolution and sensitivity, particularly for imaging large objects, due to the constraints of traditional collimator designs, which are cumbersome to replace and offer limited performance options, posing challenges in diagnosing diseases and analyzing lesions accurately.
Innovation Solution
A multi-layer staggered coupling collimator with adjustable performance indexes is introduced, comprising multiple collimation layers coupled in a staggered manner, allowing for improved spatial resolution and sensitivity, and featuring thin layers for enhanced machinability and precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional collimator designs are used, then the SPECT system can operate with simple structure, but the spatial resolution and sensitivity are limited
Solution Approach 1:
The collimator is divided into multiple layers (at least two) with staggered hole arrangements. Each layer contains collimation holes that are offset from the corresponding holes in adjacent layers, creating a segmented structure that improves spatial resolution while maintaining manageable complexity through modular design
Solution Approach 2:
The invention transitions from a traditional single-layer collimator to a multi-layer staggered structure, adding the dimension of layer stacking. This dimensional expansion allows gamma photons to be collimated through multiple staggered planes, significantly improving spatial resolution and sensitivity beyond what a single layer can achieve
2Reliability
If traditional collimator designs are used, then the collimator can be simple to manufacture, but the sensitivity is limited
Solution Approach 1:
The collimator structure is segmented into multiple manufacturable layers, each with staggered hole patterns. This segmentation allows each layer to be manufactured separately with standard techniques, then assembled through coupling structures, improving sensitivity while maintaining ease of manufacture through modular production
Solution Approach 2:
Multiple collimation layers are nested together in a staggered configuration, with each layer containing collimation holes that complement the adjacent layers. This nested multi-layer structure increases sensitivity by providing multiple collimation planes while allowing each layer to be manufactured independently using conventional techniques
3Measurement precision
If collimator replacement is needed to improve performance, then the performance can be optimized, but the replacement process is cumbersome and time-consuming
Solution Approach 1:
The collimator is segmented into multiple coupled layers that can be independently adjusted or replaced. This segmentation allows for partial replacement or adjustment of specific layers without requiring replacement of the entire collimator assembly, reducing replacement time while maintaining optimized performance
Solution Approach 2:
The multi-layer staggered collimator provides dynamic adjustability where layers can be reconfigured or replaced independently. This dynamic design allows flexible performance optimization without the need for complete collimator replacement, saving time while achieving improved spatial resolution and sensitivity
4Adaptability or versatility
If fewer collimator options are provided, then the system complexity is reduced, but the adaptability to different applications is limited
Solution Approach 1:
The collimator is segmented into multiple layers that can be configured in different staggered arrangements. This segmentation provides multiple performance options and adaptability to different applications while maintaining relatively simple device complexity through standardized layer designs and coupling mechanisms
Solution Approach 2:
The multi-layer staggered collimator design provides universal applicability across different SPECT imaging scenarios. By adjusting the staggered configuration and number of layers, a single collimator design can adapt to various application requirements (different spatial resolutions, sensitivity needs, field of view requirements) without requiring entirely different collimator 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 multi-layer staggered coupling collimator enhances the performance of SPECT systems by offering adjustable performance combinations, improving spatial resolution and sensitivity, and simplifying the collimator replacement process while maintaining machining precision.
Implementation Method 1
The plate is generally made of a heavy metal such as lead and tungsten or an alloy thereof, which can block gamma photons that do not fly in holes and allow gamma photons flying through the holes
Data Source
AI summary
A multilayer staggered coupling collimator includes multiple collimating layers, multiple collimating orifices being provided on each collimating layer. At least two collimating layers are in a staggered coupling relationship. Compared with a single-layer collimator, the multilayer staggered coupling collimator can improve the performance, achieve multi-performance selection functions, and have a better machining feasibility. Since the thickness of each collimating layer is less after the collimator is divided into several collimating layers, the machining precision is easy to ensure.