Industrial Imaging via Energy-Filtered Compton Tomography
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Solution Overview
Problem
Current gamma-ray profiling and tomographic reconstruction systems for industrial equipment require precise angular alignment of radiation sources and detectors, are costly, complex, and limited in their ability to generate comprehensive three-dimensional images, making them difficult to install and use for evaluating large industrial equipment.
Innovation Solution
A system using a radiation emission subsystem and detection subsystem with a maximum scattering angle of less than or equal to 25º, where the radiation source and detector are installed on the outer surface of industrial equipment, allowing for three-dimensional imaging without precise angular alignment, and using a processing and imaging means to select radiation samples within a defined energy range for tomographic reconstruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If precise angular alignment of radiation sources and detectors is used, then measurement precision is improved, but device complexity and installation difficulty increase
Solution Approach 1:
The patent replaces the mechanical alignment system with an energy-based selection system. Instead of using complex mechanical collimators and alignment mechanisms to control radiation direction, the invention uses energy window discrimination to select Compton-scattered photons within a specific energy range (E-THi ≤ EM ≤ E+THs), thereby eliminating the need for precise angular alignment while maintaining measurement accuracy
Solution Approach 2:
The patent changes the selection criterion from spatial/angular parameters to energy parameters. By selecting radiation samples based on their energy values within a defined range corresponding to a maximum scattering angle of ≤25º, the system transforms the alignment problem from a mechanical positioning challenge into an energy-based filtering problem, simplifying the overall system complexity
2Measurement precision
If complex collimation and alignment systems are used, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The patent replaces complex mechanical collimation and alignment systems with an energy-based photon selection approach. The system automatically selects Compton-scattered photons within the energy window E-THi ≤ EM ≤ E+THs, eliminating the need for manual collimator adjustment and precise angular alignment, thereby significantly improving ease of operation while maintaining measurement precision
3Device complexity
If conventional gamma-ray profiling is used, then simplicity is maintained, but information completeness deteriorates
Solution Approach 1:
The patent transitions from one-dimensional gamma-ray profiling to three-dimensional tomographic imaging by incorporating Compton scattering geometry. By measuring photon energy and applying tomographic reconstruction algorithms, the system generates 3D images of industrial equipment, adding spatial dimensionality information while maintaining relative system simplicity
Solution Approach 2:
The patent changes from measuring only radiation intensity (1D profiling) to measuring photon energy distribution and applying tomographic reconstruction. By selecting radiation samples within a specific energy range and using iterative reconstruction algorithms, the system transforms limited projection data into comprehensive 3D images, significantly improving information completeness
4Measurement precision
If high-resolution three-dimensional imaging is achieved, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex mechanical alignment and collimation systems with energy-based photon selection. By using the energy window E-THi ≤ EM ≤ E+THs to automatically select Compton-scattered photons, the system achieves high-resolution 3D imaging without requiring precise angular alignment, thereby reducing device complexity and cost while maintaining measurement precision
Solution Approach 2:
The patent changes the imaging approach from requiring precise spatial/angular parameters to using energy parameters for photon selection. This parameter transformation enables high-resolution tomographic reconstruction through energy-based filtering rather than mechanical precision, reducing system complexity and cost
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 approach simplifies the system, reduces costs, and enables the generation of high-quality three-dimensional images with optimized resolution, facilitating easier installation and more comprehensive evaluations of industrial equipment without the need for complex collimation and alignment.
Implementation Method 1
a radiation emission subsystem with at least one radiation source that emits radiation passing through an industrial equipment to be analyzed by imaging; a radiation detection subsystem with at least one radiation detector, which detects the energy of the radiation emitted by the radiation emission subsystem that passed through said industrial equipment
Implementation Method 2
The processing and imaging means select the radiation samples detected with an energy value within a range of values corresponding to a maximum defined scattering angle of the radiation emitted by the radiation source; Farmer and Collins: 'A new approach to the determination of anatomical cross-sections of the body by Compton scattering of gamma-rays'
Implementation Method 3
generate a tomogram of the analyzed region, where the processing and imaging means select the radiation samples detected with an energy value within a range of values corresponding to a maximum defined scattering angle; Tomography refers to acquiring imagery by sections or slices, by the use of any penetrating wave
Implementation Method 4
Conventional CT scans function through the principle of radiation attenuation called 'I ', from the initial radiation ' I 0 ', which can be analytically expressed by Beer-Lambert law in equation 1: wherein 'μ' is the linear attenuation coefficient of the medium for a given energy and 'x' is the thickness of the object
Data Source
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AI summary
An imaging process for industrial equipment is described using gamma-ray or X-ray profiling techniques and tomographic image reconstruction, wherein (a) a radiation emission subsystem with at least one radiation source emits that passes through an industrial equipment to be analyzed by imaging; (b) a radiation detection subsystem with at least one radiation detector detects the energy of the radiation emitted by the radiation emission subsystem that has passed through said industrial equipment; (c) processing and imaging means receive and evaluate the radiation samples detected by the radiation detection subsystem and generate a tomogram of the analyzed region, selecting the radiation samples detected with an energy value within a range of values corresponding to a maximum defined scattering angle of the radiation emitted by the radiation source, and generating a tomographic reconstruction of images of the industrial equipment based on these selected radiation samples.