Titanium X-Ray Filter for Dual Energy Mammography
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Solution Overview
Problem
Existing dual energy x-ray imaging methods in mammography face challenges in achieving optimal quantum yield, high contrast-to-noise ratio, and minimizing x-ray dose, particularly in the generation of high-energy images, while also requiring frequent filter changes which increase procedural time.
Innovation Solution
The use of an x-ray filter consisting essentially of titanium, which can be used to create both high-energy and low-energy images, optimizing beam quality and eliminating the need for filter changes between image types, thereby improving image quality and reducing radiation exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional x-ray filters (copper for high-energy, aluminum for low-energy) are used, then dual energy imaging can be achieved, but the procedure requires frequent filter changes which increases procedural time and complexity
Solution Approach 1:
The titanium x-ray filter is designed to perform multiple functions: it serves as the optimal filter for both high-energy and low-energy x-ray images, eliminating the need for separate copper and aluminum filters. This multi-functionality resolves the contradiction by allowing a single filter to adapt to different imaging energy requirements without requiring filter changes, thus reducing procedural time while maintaining versatility.
Solution Approach 2:
The invention merges the functions of multiple filters (copper for high-energy, aluminum for low-energy) into a single titanium filter. By combining the filtering capabilities for different energy ranges into one component, the system eliminates the need for filter changes between high-energy and low-energy imaging, thereby reducing procedural time and complexity while maintaining the ability to perform dual energy imaging.
2Measurement precision
If high-energy images are created with optimal quantum yield, then image quality improves, but patient radiation exposure increases
Solution Approach 1:
The invention changes the material parameter of the x-ray filter from traditional copper or aluminum to titanium. This parameter change optimizes the beam quality for both high-energy and low-energy images, allowing the system to achieve optimal quantum yield and image quality while simultaneously reducing the radiation dose required. The titanium filter's specific atomic number and density properties enable more efficient x-ray transmission and contrast enhancement, resolving the contradiction between image quality and radiation exposure.
3Measurement precision
If contrast agent enrichment in tumors is detected, then diagnostic sensitivity improves, but the complexity of image processing increases due to subtraction methods
Solution Approach 1:
By changing the filter material to titanium, the system optimizes the energy spectra for both high-energy and low-energy images, enhancing the visibility of contrast agent enrichment in tumors. The titanium filter produces more favorable beam quality that improves the contrast-to-noise ratio in the subtraction process, thereby improving diagnostic sensitivity while making the image processing less complex due to better inherent image quality and reduced noise.
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 enhances the quantum yield, reduces patient radiation exposure, and streamlines the imaging process by allowing the same filter to be used for both high-energy and low-energy images, improving workflow efficiency and image quality without the need for filter changes, thus achieving better diagnostic sensitivity and specificity.
Implementation Method 1
The x-ray radiation generated by the x-ray source of the x-ray system is filtered with an x-ray filter before it strikes the predetermined volume segment. The x-ray filter has the task of optimizing the beam quality of the x-ray radiation
Data Source
AI summary
In a method to create dual energy x-ray image data of a predetermined volume segment of an examination subject with an x-ray system, a low-energy x-ray image data of the volume segment is created, a high-energy x-ray image data of the volume segment is created, the low-energy x-ray image data is subtracted from the high-energy x-ray image data to create the dual energy x-ray image data. An x-ray filter that consists essentially of titanium is used in the creation of the dual energy x-ray image data.