Configurable Detector Panel for X-Ray Imaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Handheld x-ray backscatter imaging systems face challenges in accessing compact spaces and obtaining high-quality transmission images due to limited detector size and mobility, leading to reduced image resolution and accessibility issues for targets like transmission shafts and truck wheels.
Innovation Solution
An x-ray imaging system with a movable scanning module, a positioning arm, and a detector panel that can be flexibly positioned to receive x-rays from various angles, including backscatter, side scatter, and forward scatter, using wavelength-shifting fibers and scintillator volumes to enhance image resolution and accessibility in confined spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a handheld x-ray backscatter imaging system uses a fixed-size detector panel, then the device remains compact and portable, but image resolution and accessibility to compact spaces deteriorate
Solution Approach 1:
The detector panel is made dynamically configurable through a positioning arm that allows it to be moved between different positions (first position for backscatter imaging, second position for transmission imaging). This dynamic repositioning capability enables the system to achieve high-resolution imaging in multiple modes without requiring multiple fixed detectors, thus improving image resolution while maintaining reasonable device complexity.
Solution Approach 2:
The same detector panel serves multiple functions by being repositioned to different locations. In the first position, it functions as a backscatter detector; in the second position, it functions as a transmission detector. This multi-functionality allows a single detector panel to provide both backscatter and transmission imaging capabilities, improving versatility without proportionally increasing device complexity.
2Measurement precision
If the detector panel is made larger to improve image resolution, then accessibility to compact spaces deteriorates
Solution Approach 1:
The positioning arm enables the detector panel to dynamically adjust its position and orientation, allowing it to access compact spaces that would be inaccessible to a larger fixed detector. The detector can be positioned close to targets such as transmission shafts and truck wheels, maintaining ease of operation in confined spaces while still achieving high image resolution when positioned for transmission imaging.
3Adaptability or versatility
If the detector panel is fixed in position, then device complexity is reduced, but imaging versatility deteriorates
Solution Approach 1:
The positioning arm provides a mechanically simple yet effective solution for achieving multiple imaging modes. By moving the detector panel between two defined positions, the system gains versatility for both backscatter and transmission imaging without requiring complex automated positioning systems, maintaining reasonable device complexity while improving adaptability.
Solution Approach 2:
The imaging function is segmented into two distinct operational modes (backscatter and transmission), each achieved by positioning the detector panel at a specific location. This segmentation allows the system to specialize in each imaging mode when needed, providing versatility without requiring the detector to simultaneously perform all functions in a fixed configuration.
4Ease of operation
If the detector panel is made movable to improve accessibility, then ease of operation improves, but device complexity increases
Solution Approach 1:
The positioning arm introduces minimal mechanical complexity to achieve significant improvements in accessibility. The simple articulated arm structure allows the detector panel to reach various targets including transmission shafts and truck wheels, greatly improving ease of operation while adding only a straightforward mechanical component to the device.
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 system enables improved image resolution and accessibility in compact spaces, allowing for enhanced detection of concealed objects by combining backscatter and transmission images, and supporting multiple imaging modes to suit different scanning scenarios.
Implementation Method 1
a detector panel and multiple ribbons of wavelength-shifting fibers (WSFs) optically coupled to the one or more scintillator volumes along the scan axis via a spatial periodic adjacency of the multiple ribbons to the scan axis
Implementation Method 2
multiple ribbons of wavelength-shifting fibers (WSFs) optically coupled to the one or more scintillator volumes along the scan axis
Implementation Method 3
a respective photodetector coupled to an end of each respective ribbon of the plurality of ribbons. Each respective photodetector configured to detect the scintillation photons carried by the respective ribbon
Data Source
AI summary
A handheld or portable x-ray imaging system includes a housing containing an x-ray source for generating a sweeping beam, and an external detector panel mounted onto a positioning arm to allow an operator to position the external detector panel relative to the housing. The detector panel may have a width of between 1 inch and 18 inches. Embodiments allow for portable x-ray scanning in locations that can otherwise be difficult or impossible to reach with existing handheld detectors.