Multi-View X-Ray Imaging for Rapid Low-Dose 3D Reconstruction
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Solution Overview
Problem
Current x-ray imaging technologies face challenges in correlating scattered radiation with internal subject densities, leading to reduced image clarity and contrast, especially in 3D imaging, and are limited by high radiation levels and the inability to differentiate between materials like plaster casts and bone structures, requiring separate imaging methods for diagnosis and therapeutic monitoring.
Innovation Solution
The system employs an x-ray source that emits beams controllably in multiple dimensions, uses beam selectors to filter primary and scatter rays, and incorporates spectral detectors to reconstruct high-resolution 3D images, allowing for real-time monitoring and material decomposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional rotational CT methods are used to generate 3D images, then quantitative imaging data can be obtained, but the imaging process becomes time-consuming and requires high radiation levels
Solution Approach 1:
The patent segments the imaging process by using multiple 2D detectors arranged in different orientations (e.g., orthogonal views) to capture projection data from multiple angles simultaneously or in rapid sequence, eliminating the need for slow rotational scanning while still enabling 3D reconstruction
Solution Approach 2:
The patent transitions from rotational 3D imaging to a multi-dimensional 2D projection approach by arranging detectors in spatial configurations (e.g., orthogonal planes) that capture sufficient data for 3D reconstruction without requiring mechanical rotation, thus reducing imaging time
2Measurement precision
If conventional CT methods are used, then 3D imaging data can be obtained, but the system requires high radiation exposure levels
Solution Approach 1:
The patent divides the radiation detection task across multiple 2D detectors positioned at different locations and orientations, allowing each detector to capture a portion of the transmitted x-ray information. This distributed detection approach reduces the radiation burden on any single detection path while collectively providing sufficient data for 3D reconstruction
Solution Approach 2:
The patent uses multiple 2D projection views from different spatial orientations to reconstruct 3D information, replacing the need for high-radiation rotational scanning. This multi-dimensional projection approach enables 3D imaging with lower cumulative radiation exposure
3Productivity
If standard x-ray imaging is used, then imaging can be performed quickly and portably, but the system cannot provide quantitative imaging data
Solution Approach 1:
The patent uses multiple 2D detectors capturing projection data from different orientations simultaneously, providing sufficient diverse data for quantitative 3D reconstruction without requiring slow rotational scanning, thus maintaining high imaging speed while enabling quantitative analysis
Solution Approach 2:
The patent achieves quantitative 3D imaging by collecting multiple 2D projection views from different spatial dimensions simultaneously using arrayed detectors, enabling rapid quantitative reconstruction without mechanical rotation
4Ease of operation
If conventional x-ray imaging is used, then imaging can be performed, but scattered radiation reduces image clarity and contrast
Solution Approach 1:
The patent extracts and separates scattered radiation from the detected signal by using multiple detector views and computational algorithms that distinguish between primary transmitted x-rays and scattered radiation, then removes the scatter component to produce high-contrast images
Solution Approach 2:
The patent introduces computational processing and multiple detector views as intermediaries to identify and separate scattered radiation from the primary beam signal, enabling scatter correction and restoration of image quality
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 image clarity, reduces radiation exposure, and enables precise differentiation between materials, facilitating real-time diagnostic and therapeutic monitoring without the need for additional imaging procedures.
Implementation Method 1
When a beam of x-rays (photons) penetrate a subject being imaged, photons of the beam can (1) penetrate the subject in a straight line (called the primary beam)
Implementation Method 2
be absorbed by the subject, producing the lighter parts of the image
Implementation Method 3
scatter within the subject but still leave the subject and collected by the imaging detector
Data Source
AI summary
An x-ray apparatus and method can improve x-ray imaging in a variety of ways. For example, the improve x-ray apparatus can reduce scatter from x-ray images acquired by two-dimensional detectors. An improved 2D x-ray apparatus can provide 3D imaging for medical and/or industrial applications. An improved 2D x-ray apparatus and method can produce separate material imaging, and composition analysis for characterization and correlation of image, densitometry, and composition information of individual component or individual material within a single subject. Non-rotational 3D microscopy, combining 2D or 3D full field x-ray imaging and high resolution 2D or 3D x-ray microscopy or spectral absorptiometry and spectroscopy can achieve a higher resolution and wider field of view in x-ray imaging and quantitative analysis in 3D and real time. The x-ray apparatus can improve tracking and/or surgical guidance in time and/or space.