Universal Phantom X-ray Hardening Data Generation
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Solution Overview
Problem
The existing methods for obtaining material hardening effect data, particularly in CT scanning, require specially-designed phantoms that are costly and time-consuming to manufacture, limiting their applicability and flexibility in providing data for various materials and sizes.
Innovation Solution
A method using a universal phantom and algorithms like Least Squares to determine equivalent filtration thicknesses, allowing for the generation of material hardening effect data without the need for specially-designed phantoms, by pre-storing actual X-ray attenuation values and calculating hardening effects using theoretical and actual attenuation values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a specially-designed phantom is used to obtain material hardening effect data, then the accuracy and reliability of the data are improved, but the manufacturing cost and time increase significantly
Solution Approach 1:
The patent uses a universal phantom that can obtain hardening effect data for multiple different materials and sizes through algorithmic processing, replacing the need for multiple specially-designed phantoms. This universal phantom serves multiple functions by combining physical measurement with computational methods to generate material-specific hardening data.
Solution Approach 2:
The patent creates virtual copies of material hardening effects through algorithmic simulation. Instead of physically manufacturing separate phantoms for each material, the system uses measurement data from the universal phantom and applies computational algorithms to generate accurate hardening effect data for various materials, effectively copying the physical measurement results to virtual material representations.
2Measurement precision
If a specially-designed phantom is used to obtain material hardening effect data, then the data quality is improved, but the manufacturing cost increases
Solution Approach 1:
The universal phantom serves as a single cost-effective solution that can generate hardening effect data for multiple materials and sizes. By combining this universal physical phantom with algorithmic processing, the system eliminates the need to manufacture multiple expensive material-specific phantoms while maintaining high measurement precision through computational correction.
Solution Approach 2:
The patent replaces the mechanical approach of manufacturing multiple physical phantoms with a computational system. Instead of physically creating separate phantoms for each material composition and size, the system uses algorithmic processing to calculate hardening effects based on measurement data from the universal phantom, substituting mechanical manufacturing with computational methods.
3Measurement precision
If a specially-designed phantom is used, then accurate hardening effect data for specific materials is obtained, but the adaptability to different materials and sizes is reduced
Solution Approach 1:
The universal phantom combined with algorithmic processing provides a multi-functional solution that can determine hardening effect data for various materials and sizes. The system measures physical attenuation data using the universal phantom and then uses computational algorithms to generate material-specific hardening effects, making the system adaptable to different materials without requiring physical phantom modifications.
Solution Approach 2:
The patent changes the approach from physically altering the phantom for each material to computationally adjusting parameters. The system maintains a fixed universal phantom and instead varies the material parameters and algorithmic processing to generate hardening effect data for different materials and sizes, achieving versatility through parameter variation rather than physical modification.
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 reduces manufacturing costs and time, enabling the generation of hardening effect data for multiple materials and sizes efficiently, saving time and resources while maintaining accuracy.
Implementation Method 1
actual X-ray attenuation values of a universal phantom corresponding to different angles at each of channels; theoretical X-ray attenuation values corresponding to different angles at each of the channels; calculating equivalent filtration thicknesses corresponding to each of the channels
Data Source
AI summary
A method for generating material hardening effect data is provided. Actual X-ray attenuation values of a universal phantom corresponding to different angles at each of channels may be obtained. Equivalent filtration thicknesses corresponding to each of the channels may be determined according to theoretical X-ray attenuation values and the actual X-ray attenuation values corresponding to different angles at each of the channels. Hardening effect data corresponding to a material may be generated according to a predetermined length of the material, a number of sampling points and the equivalent filtration thicknesses corresponding to each of the channels.