Scanning Image Generation via Beam Collimation and Detector Trajectory
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Solution Overview
Problem
Existing X-ray tomography technologies, such as Fan-beam CT and Cone-beam CT, face challenges including inferior image quality due to X-ray scattering, limited scanning length, and high costs associated with motion control systems and detector movement.
Innovation Solution
A method and system for generating scanning images by scanning different positions of a target object using a scanning imaging source with an adjustable imaging beam collimating apparatus, allowing for precise control of the imaging beam's passing region to obtain comprehensive scanning data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If Cone-beam CT uses a large-size flat panel detector to scan a large scanning range, then the scanning length is extended, but the image quality deteriorates due to X-ray scattering and signal-to-noise ratio problems
Solution Approach 1:
The patent divides the large scanning range into multiple smaller sub-regions and scans them sequentially using a smaller detector. The detector scans different positions of the target object by moving in a predetermined scanning trajectory, and the obtained sub-images are combined to form a complete scanning image. This segmentation approach maintains image quality while achieving extended scanning coverage.
Solution Approach 2:
The patent introduces temporal dimension by scanning different positions sequentially over time rather than capturing the entire large area simultaneously. The scanning trajectory in the time dimension allows a smaller detector to cover a larger spatial area by moving through different positions, resolving the contradiction between detector size and scanning range.
2Length of stationary object
If Fan-beam CT uses continuous or stepwise motion of a bed to achieve long scanning length, then the scanning length requirement is met, but motion artifacts increase and imaging quality deteriorates
Solution Approach 1:
Instead of moving the bed to achieve long scanning length, the patent inverts the approach by keeping the bed stationary and moving the detector along a predetermined scanning trajectory. This eliminates motion artifacts caused by bed movement while still achieving extended scanning coverage through the detector's motion.
Solution Approach 2:
The patent replaces the mechanical bed movement system with a detector movement system that scans along a predetermined trajectory. This substitution eliminates the need for complex bed motion control and reduces motion artifacts, while the detector's movement achieves the same extended scanning coverage.
3Adaptability or versatility
If Cone-beam CT moves the flat panel detector and imaging source to complete imaging, then the scanning flexibility is improved, but the motion control system complexity and cost increase
Solution Approach 1:
The patent extracts the motion requirement from the imaging source and bed, keeping them stationary. Only the detector is moved along a predetermined scanning trajectory, which significantly simplifies the motion control system while maintaining scanning flexibility. The imaging source remains fixed, eliminating the need for complex coordinated motion control of multiple components.
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 improves the imaging effect by enhancing the signal-to-noise ratio and reducing motion artifacts, while also simplifying the motion control system and reducing costs by allowing stationary imaging sources and detectors.
Implementation Method 1
due to a problem of X-ray scattering in a large field
Implementation Method 2
The detector is configured for receiving the imaging beam, and obtaining a plurality of scanning data
Data Source
AI summary
A generating method, a system, and a device of a scanning image, and a computer-readable storage medium are provided. The method includes: scanning different positions of a target object, respectively, by changing a passing region of an imaging beam emitted from a scanning imaging source, obtaining a plurality of scanning data of the target object, and obtaining a scanning image corresponding to the target object based on the plurality of scanning data of the target object.