Multi-Array Detector Module with Heavy Metal Shielding
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Solution Overview
Problem
Existing radiation imaging systems with single-array detectors face limitations in scanning speed, image distortion, and information loss due to low repetition frequency of the accelerator and inefficient radiation field utilization, leading to compromised imaging quality.
Innovation Solution
A multi-array detector module structure with two rows of peripheral detector arrays and a middle array, along with heavy metal sheets and plates to reduce cross talk and diffusion, enhancing scanning speed and image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the repetition frequency of the accelerator is improved, then the scanning speed can be increased, but the technical implementation becomes difficult and power consumption increases considerably
Solution Approach 1:
The detector array is divided into multiple independent rows (first row, second row, third row) with detectors having different sensitive region widths. This segmentation allows the system to achieve high scanning speed by utilizing the narrow sensitive region detectors in the first and third rows while maintaining image quality through the middle row, thereby avoiding the need to increase accelerator repetition frequency which would be technically complex and power-intensive.
Solution Approach 2:
The patent transitions from a single-row detector array to a multi-row three-dimensional arrangement. By adding the dimension of multiple rows with varying detector characteristics, the system achieves improved scanning speed without requiring higher accelerator repetition frequency, thus resolving the contradiction between speed and technical complexity.
2Productivity
If the width of each sensitive region of the detector is increased, then the radiation field efficiency improves, but the pixel size increases which influences discrimination of fine substances and reduces imaging quality
Solution Approach 1:
Different rows of detectors are assigned different sensitive region widths according to their specific functions. The first and third rows use detectors with narrower sensitive regions for high-resolution imaging of fine substances, while the second row uses detectors with wider sensitive regions for improved radiation field efficiency. This local differentiation allows the system to optimize both imaging quality and radiation efficiency simultaneously.
Solution Approach 2:
The detector array is segmented into multiple rows with different detector characteristics. By segmenting the detection function across rows with varying pixel sizes and sensitive region widths, the system can achieve both high radiation field efficiency and high imaging quality, resolving the contradiction between productivity and measurement precision.
3Ease of manufacture
If a single-array detector is used, then the manufacturing process and image reconstruction are simple, but the radiation field efficiency is low and image distortion occurs
Solution Approach 1:
The detector array is segmented into multiple rows with different detector characteristics optimized for specific functions. This segmentation increases radiation field efficiency by better matching detector capabilities to radiation patterns, while the modular row structure maintains relatively simple manufacturing processes compared to fully customized single-array designs.
Solution Approach 2:
By adding the dimension of multiple rows with varying detector characteristics, the system achieves higher radiation field efficiency and reduced image distortion while maintaining manufacturing simplicity. The multi-row structure allows for better radiation field utilization without requiring complex manufacturing processes.
4Speed
If the repetition frequency of the accelerator is increased, then the scanning speed improves, but the radiation field intensity increases causing difficulty in radiation protection and power consumption increases
Solution Approach 1:
The detector array is divided into multiple rows with different sensitive region widths, allowing the system to achieve high scanning speed by utilizing detectors with narrower sensitive regions that require lower radiation field intensity. This segmentation enables fast scanning without increasing accelerator repetition frequency, thereby avoiding excessive power consumption and radiation protection difficulties.
Solution Approach 2:
The patent introduces a multi-row dimensional structure that enables high scanning speed through optimized detector geometry rather than increasing accelerator frequency. This dimensional approach allows fast scanning at lower radiation field intensities, resolving the contradiction between scanning speed and power consumption.
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 multi-array detector module structure improves scanning speed, prevents image distortion, and enhances imaging quality by reducing cross talk and diffusion, while offering economic benefits and simplified installation and maintenance.
Implementation Method 1
heavy metal sheets provided between respective detector arrays in respective rows of detector arrays, for reducing cross talk
Data Source
AI summary
Disclosed is a multi-array detector module structure pertaining to the technical field of radiation detecting. The multi-array detector module structure comprises a casing, a bottom plate to which a bottom end of the casing is fixedly connected, and a multi-array detector composed of a plurality of detectors, wherein a mounting frame is disposed on the bottom plate, and the mounting frame includes an upper plate and a lower plate. The multi-array detector comprises two rows of peripheral detector arrays fixed to the upper plate and the lower plate of the mounting frame, respectively, and at least one row of middle detector array disposed between the two rows of peripheral detector arrays and fixed to the same. Heavy metal sheets are provided between respective detector arrays in respective rows of detector arrays, for reducing cross talk. Furthermore, heavy metal plates are provided between the two rows of peripheral detector arrays and the upper plate and the lower plate of the mounting frame, respectively, for reducing diffusion. Compared with the prior art, the present invention can achieve remarkable economic benefit by slightly improving the structure with low investment. The present invention further has advantages of a simple structure and convenience in installation and maintenance.