Dual-Array Detector Module for Radiation Imaging
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Solution Overview
Problem
Existing radiation imaging systems face limitations in scanning speed and imaging quality due to the technical difficulties in increasing repetition frequency of the accelerator and low utilization efficiency of the radiation field, leading to distorted images and missed information about the inspected object.
Innovation Solution
A dual-array detector module is introduced, comprising two detector arrays on opposite surfaces of a heavy metal plate with spacing heavy metal sheets, mounted in an elbow-shaped housing, which increases scanning speed and maintains image quality by reducing cross-talk and scattering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the repetition frequency of the accelerator is increased to prevent image distortion and information loss, then the scanning speed is improved, but the radiation field intensity increases making radiation shielding difficult and power consumption increases
Solution Approach 1:
The detector is divided into two separate detector arrays (first detector array and second detector array) positioned on opposite surfaces of a heavy metal plate. Each array independently detects radiation from different sides, allowing the system to achieve higher scanning speeds without increasing the radiation field intensity, as each array operates with reduced exposure time rather than requiring higher repetition frequency
Solution Approach 2:
The patent transitions from a single-array detector to a dual-array detector configuration by adding a second dimension of detection (front surface and back surface of the heavy metal plate). This dimensional change enables simultaneous detection from multiple angles, improving scanning speed without requiring increased radiation field intensity or repetition frequency
2Productivity
If the sensitive region width of each detector is increased to improve radiation field utilization efficiency, then the radiation field utilization is improved, but the pixel size increases degrading imaging quality and causing loss of fine object information
Solution Approach 1:
The detector array is segmented into multiple individual detectors with small pixel sizes, each maintaining high imaging quality. The heavy metal plate with spacing heavy metal sheets provides the necessary radiation shielding and structural support, allowing each small detector to contribute to the overall radiation field utilization without compromising the resolution needed for fine object detection
Solution Approach 2:
The heavy metal plate acts as an intermediary structure between the two detector arrays. It provides radiation shielding, mechanical support, and electrical isolation while allowing radiation to pass through to the second array. The spacing heavy metal sheets serve as intermediaries to prevent cross-talk between adjacent detectors while maintaining the compact structure
Data Source
AI summary
Disclosed is a dual array detector module adapted to radiation-imaging, comprising: a first detector array consisting of a plurality of first detectors and arranged on a first surface of a heavy metal plate; a second detector array consisting of a plurality of second detectors and arranged on a second surface of the heavy metal plate opposite to the first surface; and a mounting frame, in which the first detector away and the second detector array arranged on the first and second surfaces of the heavy metal plate respectively are mounted in the mounting frame, a housing which has a substantially elbow shape in cross-section, wherein an electronic circuit board having an output terminal and an input terminal is disposed inside the housing, in which the input terminal of the electronic circuit board is connected to signal output terminals of the first and second detector arrays and the output terminal of the electronic circuit board is connected to a socket mounted on the housing.