Dual-Detector Radiological Imaging Device for Reducing Parasitic Radiation
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Solution Overview
Problem
Conventional radiological imaging devices require separate equipment for different analysis types, leading to inefficiencies and increased radiation exposure due to parasitic radiation, which affects image quality and patient safety.
Innovation Solution
A radiological imaging device with a dual-detector system that includes a flat panel sensor and a linear sensor, capable of switching between configurations to perform tomography, fluoroscopy, and radiography, using a movement apparatus to maintain consistent source-detector distances and reduce radiation exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional flat panel sensors are used for radiographic imaging, then two-dimensional imaging is achieved, but image quality deteriorates due to parasitic radiation
Solution Approach 1:
The patent extracts and removes parasitic radiation from the imaging system by placing lead shields between the patient and detector, and by using collimators to extract only the useful primary radiation beams, thereby improving image quality by eliminating scattered radiation interference
Solution Approach 2:
The patent introduces intermediary elements such as anti-diffusion grids composed of lead plates and collimators that act as mediators between the radiation source and detector, filtering out parasitic radiation while allowing primary radiation to pass through for high-quality imaging
2Object-affected harmful factors
If anti-diffusion grids are added to reduce parasitic radiation, then radiation exposure is reduced, but image quality may deteriorate due to higher required doses
Solution Approach 1:
The patent converts the harmful effect of scattered radiation into a beneficial filtering process by using anti-diffusion grids that selectively block parasitic radiation while transmitting primary radiation, thereby reducing radiation exposure without compromising image quality
Solution Approach 2:
The patent optimizes the parameters of the anti-diffusion grids, including lead plate thickness, spacing, and configuration, to achieve the optimal balance between radiation filtration and image quality, ensuring that radiation exposure is reduced while maintaining diagnostic image standards
3Adaptability or versatility
If multiple separate radiological imaging devices are used for different analyses, then comprehensive imaging capability is achieved, but device complexity and cost increase
Solution Approach 1:
The patent creates a universal radiological imaging device that can perform multiple imaging modalities including radiography, fluoroscopy, and tomography by integrating different detector types (flat panel sensors and linear sensors) and configurable imaging geometries within a single device, thereby eliminating the need for multiple separate devices
Solution Approach 2:
The patent merges multiple imaging functions and detector systems into a single integrated device, combining flat panel sensors for two-dimensional imaging with linear sensors for tomographic reconstruction, and integrating various imaging modalities to provide comprehensive diagnostic capability in one unified system
4Adaptability or versatility
If patients are moved between different imaging devices for various analyses, then comprehensive diagnostic coverage is achieved, but patient risk and procedure time increase
Solution Approach 1:
The patent provides a single universal imaging device capable of performing radiography, fluoroscopy, and tomography, allowing all required diagnostic procedures to be completed in one location without moving the patient between devices, thereby reducing procedure time and patient risk
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
Enables efficient performance of multiple imaging procedures in a single device, improving image quality, reducing radiation exposure, and minimizing patient movement, thereby enhancing safety and operational efficiency.
Implementation Method 1
a source 21 to emit radiation defining a central axis of propagation 21a
Implementation Method 2
a first detector 24, that comprises at least one flat panel sensor 32f, to detect radiation when performing at least one of tomography and fluoroscopy
Implementation Method 3
conventional radiological imaging devices are often fitted with anti-diffusion grids composed of thin lead plates fixedly arranged parallel to each other so as to prevent the diffused rays from reaching the flat panel sensor
Data Source
AI summary
A radiological imaging device that includes a source that emits radiation that passes through at least part of a patient, the radiation defining a central axis of propagation; and a receiving device that receives the radiation and is arranged on the opposite side of the patient with respect to the source. The receiving device includes a first detector to detect radiation when performing at least one of tomography and fluoroscopy, a second detector to detect radiation when performing at least one of radiography and tomography; and a movement apparatus arranged to displace the first and second detectors with respect to the source. The movement apparatus provides a first active configuration in which the radiation hits the first detector and a second active configuration in which the radiation hits the second detector.