Sparse Area Array Detector for Flexible DR/CT Scanning
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Solution Overview
Problem
Existing detectors for container/vehicle inspection systems lack flexibility and efficiency in switching between DR and CT scanning modes, and are not well-suited for diverse scanning environments.
Innovation Solution
An area array detector with sparsely arranged detector assemblies of varying scintillator arrays and pixel sizes, sealed units, and a data acquisition circuit board for adaptive scanning modes, allowing seamless switching between DR and CT imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If detectors for DR scanning are arranged continuously in fewer rows, then the device structure is simpler, but the adaptability to different scanning modes (DR and CT) is reduced
Solution Approach 1:
The detector is divided into multiple independent detector assemblies arranged in rows, with each assembly containing detector elements that can be independently configured. This segmentation allows different rows to have different scintillator configurations (e.g., different pixel sizes, materials), enabling the same physical detector structure to support both DR and CT scanning modes by selectively activating appropriate rows
Solution Approach 2:
The detector system is designed with universal functionality to perform both DR (Digital Radiography) and CT (Computed Tomography) scanning modes using the same physical detector array. By configuring different rows with different scintillator properties and enabling selective activation, a single detector device can serve multiple scanning purposes, eliminating the need for separate dedicated DR and CT detectors
2Ease of manufacture
If detectors for CT scanning use uniform scintillator configuration, then the manufacturing is simpler, but the imaging quality for different scanning modes cannot be optimized
Solution Approach 1:
Different rows of detector assemblies are configured with different scintillator properties (pixel size, material composition, thickness) optimized for specific scanning modes. For example, rows designated for DR may use larger pixel sizes and different scintillator materials compared to rows optimized for CT scanning, allowing each local region of the detector to have quality characteristics tailored to its intended function while maintaining a unified manufacturing process
3Area of stationary object
If detector assemblies are densely arranged, then the detection coverage is larger, but the scattering between adjacent detectors increases
Solution Approach 1:
Light-shielding structures (septa or barriers) are positioned between adjacent detector assemblies to act as intermediaries that block scattered radiation from reaching neighboring detectors. These structures prevent cross-talk and reduce scattering effects while maintaining a compact detector arrangement, allowing the system to achieve large detection coverage without sacrificing image quality due to scattering
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
Enhances imaging quality, reliability, and flexibility by enabling high-resolution DR and efficient CT scanning, with reduced scattering and improved detection capabilities in diverse environments.
Implementation Method 1
a first detector assembly is different from other second detector assemblies... the scintillator arrays of the first detector assembly and the second detector assembly differ
Data Source
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AI summary
This disclosure provides an area array detector, a detection method, and a corresponding container/vehicle inspection system, and relates to the field of ray scanning. The area array detector for the container/vehicle inspection system comprises: a plurality of sparsely arranged detector assemblies, wherein a first detector assembly is different from other second detector assemblies; and a backplane for carrying and mounting the plurality of detector assemblies, thereby the area array detector supporting a plurality of scanning modes is enabled.