Radiation Tomography Device Imaging Range Calculation
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Solution Overview
Problem
Conventional radiation tomography imaging devices face inefficiencies due to limited movable ranges of radiation sources, leading to potential interference with the ceiling or floor and increased radiation exposure, as the movable range is restricted by mechanical limitations and parameters like imaging distance and irradiation swing angle.
Innovation Solution
A radiation tomography imaging device that includes a detection means, a radiation source moving mechanism, irradiation control, image generation, tomography image acquisition, and a possible imaging range calculation means to determine the positional range of the radiation detection means based on parameters such as imaging distance, irradiation swing angle, and movable range of the radiation source, allowing preliminary calculation of the imaging range to avoid mechanical restrictions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the radiation source movable range is extended to accommodate larger imaging distance and irradiation swing angle, then the imaging quality and flexibility are improved, but the mechanical structure becomes more complex and the risk of interference with ceiling or floor increases
Solution Approach 1:
The system calculates the required radiation source movable range in advance based on preset imaging parameters (imaging distance, irradiation swing angle) before actual imaging occurs. This preliminary calculation allows the system to prepare the optimal configuration without requiring mechanical extensions during the imaging process, thus maintaining mechanical simplicity while achieving imaging flexibility.
Solution Approach 2:
The system dynamically adjusts the radiation source position within its mechanical limits by coordinating detector position and imaging parameters. Rather than extending the mechanical range, the system optimizes the utilization of available range through real-time parameter adjustment, maintaining adaptability without increasing mechanical complexity.
2Device complexity
If the radiation source movable range is limited by mechanical constraints, then the mechanical structure remains simple, but the imaging time increases and radiation exposure increases due to interruptions
Solution Approach 1:
The system performs preliminary calculation of the radiation source movable range based on imaging parameters before imaging begins. This allows the system to identify potential range limitations in advance and adjust detector position or imaging parameters proactively, preventing interruptions during imaging and maintaining high efficiency without requiring complex mechanical extensions.
Solution Approach 2:
The system uses feedback from the calculated movable range information to continuously optimize imaging parameters and detector position. This closed-loop control ensures the radiation source operates within mechanical limits while maintaining imaging efficiency by adjusting other parameters compensatorily, avoiding interruptions and reducing radiation exposure.
3Manufacturing precision
If the imaging parameters (imaging distance, irradiation swing angle) are increased to improve image quality, then the tomography resolution is improved, but the radiation source movable range requirement exceeds mechanical limits
Solution Approach 1:
The system calculates the radiation source movable range required for the desired imaging parameters before actual imaging. By presetting imaging distance and irradiation swing angle, the system determines whether the required range is within mechanical limits in advance, allowing optimization of image quality parameters without exceeding mechanical capabilities.
Solution Approach 2:
The system optimizes the combination of imaging parameters (imaging distance, irradiation swing angle, detector position) to achieve the desired tomography resolution while staying within mechanical limits. By adjusting parameters in coordination rather than maximizing individual parameters, the system maintains high resolution without requiring extended movable range.
4Device complexity
If the radiation source movable range is insufficient, then the mechanical structure remains simple, but unnecessary interruptions occur and radiation exposure increases
Solution Approach 1:
The system calculates the required radiation source movable range in advance based on imaging parameters before imaging begins. This preliminary assessment allows the system to detect potential range insufficiency beforehand and adjust detector position or parameters proactively, preventing interruptions during imaging that would otherwise increase radiation exposure to the subject.
Solution Approach 2:
The system uses feedback from the movable range calculation to continuously optimize imaging configuration. When range limitations are detected, the system adjusts detector position and imaging parameters to compensate, ensuring continuous imaging operation without interruptions that would increase radiation exposure, all while maintaining simple mechanical structure.
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 solution enables efficient and high-quality radiation tomography imaging by ensuring the radiation detection means operates within the movable range of the radiation source, preventing unnecessary interruptions and reducing radiation exposure, thus shortening imaging time and improving image quality.
Implementation Method 1
a radiation source (103) and a radiation detector (105) are in place facing each other as if sandwiching the subject (M)... the radiation source (103) intermittently irradiates from the position indicated by the solid line to the position indicated by the broken line... the radiation source (103) intermittently irradiates to the subject (M) from the focus point (103a)... the FPD (105) detects the radiation irradiated from the focus point (103a) and passed through the subject (M)
Data Source
AI summary
In a radiation tomography imaging device, the imaging range calculation element 35 calculates a possible imaging range of the FPD 5 based on the imaging distance G, the irradiation swing angle .theta. and the movable range SP of the X-ray tube 3. The operator can preliminarily calculate the possible imaging range of the radiation detection means prior to the X-ray tomography imaging because the imaging distance, the irradiation swing angle, and the movable range SP are all predetermined parameters. The possible imaging range FP of the FPD 5 is the positional range of the FPD 5 in which the X-ray tube 3 can acquire the X-ray tomography image without moving the X-ray tube 3 to the outside of movable range. Therefore, the radiation tomography imaging can start the X-ray tomography by assuredly moving the FPD 5 within the possible imaging range by referring to the preliminarily calculated possible imaging range of the FPD 5. As results, an incident in which the X-ray tube 3 moves out of the movable range SP and interferes the floor surface W and so forth can be avoided, so that the X-ray tomography imaging can be performed adequately.