Removable Backscatter Detector for X-Ray Imaging Standoff
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Solution Overview
Problem
Handheld x-ray backscatter imaging devices have limited maximum standoff distance due to small, compact detectors, restricting their use for imaging objects beyond 12 inches, as larger detectors would compromise their ability to operate in confined spaces.
Innovation Solution
A removable large-area backscatter detector that can be easily attached and detached from the handheld imaging instrument, allowing for two imaging modes: compact mode for close-range imaging in confined spaces and extended mode with a larger detector for greater distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If larger backscatter detectors are used to increase detection area for extended range imaging, then image quality at longer distances improves, but the instrument becomes bulkier and heavier, compromising portability and ease of operation
Solution Approach 1:
The detector system is segmented into two separate detector assemblies: a first compact detector assembly integrated into the handheld instrument for close-range imaging, and a second larger detector assembly that can be removably attached for extended range imaging. This segmentation allows each detector to be optimized for its specific function without compromising the portability of the base instrument.
Solution Approach 2:
The handheld imaging instrument is designed with universal functionality to operate in multiple imaging modes by accepting different detector assemblies. The instrument can function with the compact first detector for confined space imaging, or with the larger second detector for extended range imaging, making it adaptable to various operational requirements without requiring separate dedicated devices.
2Length of stationary object
If larger backscatter detectors are used to detect more backscattered x-rays for imaging beyond 12 inches, then maximum standoff distance increases, but the instrument becomes less maneuverable in confined spaces
Solution Approach 1:
The detector system is divided into a compact first detector assembly for maneuverability in confined spaces and a larger second detector assembly for extended standoff distance imaging. The segmented design allows the operator to select the appropriate detector size based on the imaging environment and distance requirements.
Solution Approach 2:
The detector configuration is made dynamic and adjustable through removable attachment mechanisms. The instrument can transition between different detector assemblies based on operational needs, allowing the system to adapt its physical characteristics to match the specific imaging scenario whether confined or open space.
3Power
If the x-ray source power is increased to improve imaging at greater distances, then detection capability improves, but the instrument weight and size increase due to power and cooling requirements
Solution Approach 1:
The system segments the power delivery function between a compact handheld unit with limited power capacity and removable detector assemblies. By separating the detector from the power source and allowing detector interchange, the system enables higher power operation when needed without permanently increasing the handheld unit's weight and size.
Solution Approach 2:
The system changes operational parameters by allowing different detector assemblies to be matched with different power levels. The compact first detector operates with the handheld instrument's limited power, while the larger second detector can be used when higher power is available, optimizing the balance between power, weight, and imaging capability for each scenario.
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
Enables high-quality imaging at both close and extended ranges without compromising the instrument's portability and usability, by providing interchangeable detector options that enhance detection area without increasing bulk or weight.
Implementation Method 1
backscatter imaging uses reflected or scattered x-rays to create the image
Implementation Method 2
The intensity of the x-rays scattered in the backwards direction is then detected as a function of the position of the source x-ray beam
Data Source
AI summary
An x-ray imaging system, and a corresponding kit and method, includes a movable x-ray imager that includes a first backscatter x-ray detector assembly. The system also includes a second backscatter x-ray detector assembly that is removably attachable with the movable x-ray imager. The movable x-ray imager and the second backscatter x-ray detector include complementary attachment features configured to secure, removably, the second backscatter x-ray detector assembly with the movable x-ray imager to form an attached arrangement having the second and first backscatter x-ray detectors fixedly oriented with respect to each other. The second backscatter x-ray detector assembly forms an outer loop defining an inner opening at which the movable x-ray imager is configured to be received for attachment of the second backscatter x-ray detector assembly with the movable x-ray imager to form the attached arrangement.