Dual Detector Radiation System for High-Resolution Imaging
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Solution Overview
Problem
Current radiation systems in security and medical imaging often mischaracterize objects due to lower resolution 3D images from CT systems, leading to false positives, requiring additional manual inspection for threat detection.
Innovation Solution
A radiation system comprising a rotating gantry with a first detector array for generating volumetric data and a stationary second detector array for high-resolution projection images, both illuminated by a single radiation source, allowing for simultaneous generation of high-resolution projection images and volumetric data for improved threat detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a CT system is used to generate volumetric data, then automated threat detection can be performed, but the image resolution is lower and false positives increase
Solution Approach 1:
The system divides the detection task into two separate detector arrays: one dedicated to volumetric data acquisition for automated threat detection, and another dedicated to high-resolution projection imaging for visual inspection. This segmentation allows each detector to be optimized for its specific function, resolving the contradiction between automation capability and image quality.
2Measurement precision
If a line system is used to generate projection images, then high resolution images are obtained, but volumetric data for automated analysis is not available
Solution Approach 1:
The radiation system is designed with multi-functionality by incorporating both volumetric imaging capability (through the rotating gantry with first detector array) and high-resolution projection imaging capability (through the stationary second detector array). This allows a single system to perform both automated threat detection and high-quality visual inspection without requiring separate systems.
3Adaptability or versatility
If separate systems are used for volumetric imaging and projection imaging, then both functions can be performed, but system complexity and cost increase
Solution Approach 1:
The patent merges two separate imaging systems (CT system for volumetric data and line system for projection images) into a single integrated radiation system. Both detector arrays share the same radiation source and are controlled by a single controller, reducing system complexity while maintaining dual imaging capabilities.
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 configuration enhances threat detection accuracy by providing high-resolution projection images for visual inspection and volumetric data for automated analysis, reducing false positives and improving object characterization.
Implementation Method 1
an image(s) is formed based upon the radiation absorbed and/or attenuated by interior aspects of the object, or rather an amount of photons that is able to pass through the object. Generally, highly dense aspects of the object absorb and/or attenuate more radiation than less dense aspects
Data Source
AI summary
Among other things, radiation systems and techniques for generating volumetric data and projections images of an object(s) under examination are provided. The radiation system comprises at least two detector arrays and at least one radiation source. During an examination, the radiation source and at least one detector array are rotated about the object while a second detector array is substantially fixed in place. In one embodiment, the radiation source is configured to, at times, illuminate the first detector array and, at times, illuminate the second detector array. For example, the radiation source may illuminate the first detector array during nearly all of the rotation while the second detector array is merely illuminated at a single gantry rotation angle. Information generated by the second detector array may be utilized to yield volumetric data while information generated by the first detector array may be utilized to yield a projection image, for example.