Multi-Target X-Ray Imaging for Fast ROI Radiographic Inspection
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Solution Overview
Problem
Existing CT scanning systems are limited by scanning speed and require additional detector systems to improve sampling frequency, leading to increased size and cost, and struggle with focusing on regions of interest while minimizing scattered signals.
Innovation Solution
An imaging system with a movable ray source and detector assembly that focuses on a defined imaging area, allowing simultaneous X-ray emission from multiple target spots without overlapping detector coverage, reducing system size and cost, and enhancing scanning efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If additional detector systems are added to improve sampling frequency, then scanning speed is improved, but system size and cost increase significantly
Solution Approach 1:
The imaging system divides the detection task into multiple independent detector units arranged in different spatial positions. Each detector unit captures X-ray data from a specific angular range, and the combined data from all segments reconstructs the complete image, achieving high sampling frequency without requiring a single large detector system
Solution Approach 2:
The patent transitions from a single-plane detector arrangement to a three-dimensional spatial distribution of multiple detector units around the imaging area. This dimensional expansion allows simultaneous multi-angle detection, effectively increasing sampling frequency while maintaining manageable detector size
2Productivity
If additional detector systems are added to improve sampling frequency, then scanning speed is improved, but system cost increases significantly
Solution Approach 1:
Each detector unit is designed with multi-functional capability, serving both as a primary detection element for its assigned angular range and as part of the overall redundant detection network. This universal design allows the system to achieve high sampling frequency with fewer, more versatile detector units, reducing total system cost
3Measurement precision
If the ray source emits X-rays to cover the entire object, then complete object imaging is achieved, but scanning speed decreases when only ROI is needed
Solution Approach 1:
The system implements local quality detection by assigning different detector units to monitor specific regions of interest within the imaging area. When only ROI imaging is required, the ray source and selected detector units focus exclusively on that region, achieving high scanning speed while maintaining complete imaging capability when needed
Solution Approach 2:
The imaging system dynamically adjusts the active imaging region based on clinical requirements. The ray source and detector units can switch between full-object scanning mode and ROI-focused mode, optimizing scanning speed for ROI while preserving comprehensive imaging coverage capability
4Productivity
If multiple target spots emit X-rays simultaneously, then beam output frequency increases, but detector coverage may overlap
Solution Approach 1:
The system employs asymmetric spatial arrangement of multiple target spots and their corresponding detector units. Each target spot is paired with a detector unit positioned at a unique angular position, ensuring that X-ray beams from multiple targets simultaneously reach their designated detectors without overlapping, maintaining both high beam output frequency and precise detector coverage
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 enables high-speed scanning of regions of interest with reduced system volume and cost, improving scanning efficiency and minimizing scattered signal interference.
Implementation Method 1
a ray source (200) to emit X-rays, and a detector assembly (300) to receive the X-rays emitted from the first ray source assembly (200) and pass through the imaging area (110)
Data Source
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AI summary
The present disclosure relates to an imaging system and method for radiographic inspection. The imaging system for radiographic inspection includes an inspection area including an imaging area; a first ray source assembly, all the first target spots of which are arranged in a first ray source plane; a first detector assembly, the plurality of first detector units of which are arranged in a detector plane, the detector plane and the first ray source plane are spaced apart from each other in a travelling direction of the object under inspection with a predetermined distance; and a ray source control device, configured such that when the region of interest of the object under inspection is at least partially located in the imaging area, the first ray source assembly emits X-rays simultaneously from at least two first target spots to the imaging area at the same time, wherein among the at least two first target spots of the first ray source assembly that simultaneously emit X-rays to the imaging area, a ray emission range of each first target spot can cover the imaging area, and the first detector crystals corresponding to the ray emission ranges of any two first target spots do not coincide with each other.