Multi-Source X-Ray Imaging with Beam Stop Arrays for Scatter Correction
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Solution Overview
Problem
Existing X-ray imaging techniques using a single radiation source suffer from motion artifacts and image degradation due to scattering and mechanical accuracy errors, leading to reduced spatial resolution and poor image quality.
Innovation Solution
Implementing an X-ray imaging system with a plurality of radiation sources, each equipped with a beam stop array to block radiation beams, and utilizing a calibration model and trained machine learning models to correct scatter distribution and geometric parameters, thereby improving image quality and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single radiation source moves or rotates to acquire imaging data under different angles, then imaging data can be acquired from multiple angles, but scanning time increases and motion artifacts reduce spatial resolution
Solution Approach 1:
The patent divides a single radiation source into multiple radiation sources arranged in an array. Each radiation source emits X-rays at a different angle simultaneously, eliminating the need for mechanical movement. This segmentation approach allows acquisition of multi-angle imaging data in a single static configuration, reducing scanning time and avoiding motion artifacts while maintaining spatial resolution.
2Measurement precision
If a planar array imaging technique is used to avoid motion of the radiation source, then motion artifact is reduced, but image degradation is caused by scattering
Solution Approach 1:
The patent extracts and removes scattered radiation from the imaging system by placing a beam stop array between the radiation sources and the subject. The beam stop array selectively blocks scattered X-rays while allowing primary X-rays to pass through, thereby eliminating the harmful scattering effect and improving image quality without requiring motion of the radiation source.
3Ease of operation
If mechanical components are used in the imaging device, then the device can be operated, but mechanical accuracy errors cause geometric parameter changes and poor image quality
Solution Approach 1:
The patent replaces the mechanical movement system with a static planar array configuration. Instead of moving a single radiation source mechanically to change angles, multiple radiation sources are fixed in different positions in a planar array. This substitution eliminates mechanical accuracy errors and geometric parameter changes while maintaining the capability to acquire multi-angle imaging data.
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 system effectively determines scatter distribution and corrects for geometric errors, enhancing image quality and efficiency by reducing scatter-induced artifacts and mechanical inaccuracies.
Implementation Method 1
Each of at least a portion of the plurality of radiation sources may be configured with a beam stop array that is configured to block at least a portion of radiation beams emitted by the radiation source
Implementation Method 2
X-rays have been widely used in medical diagnosis, radiotherapy planning, surgery planning, radiotherapy, and other medical procedures
Implementation Method 3
image degradation may be caused by scattering
Data Source
AI summary
The present disclosure provides a system for imaging via an imaging device including a plurality of radiation sources. Each of at least a portion of the plurality of radiation sources may be configured with a beam stop array that is configured to block at least a portion of radiation beams emitted by the radiation source. For one of the at least a portion of the plurality of radiation sources, the system may determine, based on a scatter distribution, first image data, and second image data, third image data of a subject corresponding to each of the at least a portion of the plurality of radiation sources. For each of at least a portion of the plurality of radiation sources, the system may further determine, based on image data of the subject, target image data of the subject using a calibration model.