Low-Current X-Ray Scanner With TDS Detectors
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Solution Overview
Problem
Conventional scanners face issues with fast overheating of X-ray sources, leading to short scanning times, frequent cooling interruptions, and reduced tube lifetime, resulting in low throughput and high replacement costs.
Innovation Solution
A forensic scanner utilizing a low-current X-ray source up to 2.5 mA combined with Time Delayed Summation (TDS) technology and direct photon counting detectors allows for continuous high-quality imaging without cooling interruptions, using a C-frame with detector arrays and an electromagnetic drive for precise positioning and image generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-current X-ray source (up to 400 mA) is used, then image quality and scanning speed are improved, but the X-ray tube overheats quickly requiring frequent cooling interruptions
Solution Approach 1:
The patent changes the current parameter from high (400 mA) to low (2.5 mA), which fundamentally alters the thermal load on the X-ray tube. This parameter change allows continuous operation without overheating while maintaining image quality through advanced detector technology (TDS) that compensates for lower source intensity
Solution Approach 2:
The patent replaces the mechanical/thermal cooling system requirements with an electronic/digital signal processing system (TDS technology). Instead of managing thermal dissipation through physical cooling, the system uses time-delayed summation of detector signals to maintain image quality at lower X-ray flux, eliminating cooling interruptions
2Loss of time
If high-current X-ray source is used, then scanning time is reduced, but the X-ray tube requires frequent cooling interruptions
Solution Approach 1:
The patent enables continuous X-ray tube operation by eliminating the need for cooling interruptions. The low current (2.5 mA) generates minimal heat, allowing the tube to operate continuously without thermal management pauses, thereby maintaining consistent scanning throughput without time loss to cooling cycles
3Measurement precision
If high-current X-ray source is used, then image quality is improved, but the X-ray tube lifetime is reduced
Solution Approach 1:
The patent changes the operating current parameter to a low value (2.5 mA), which dramatically reduces thermal stress and extends X-ray tube lifetime. Image quality is maintained not by increasing source intensity but through TDS technology that optimizes signal detection and processing, decoupling image quality from source power
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 solution enables continuous scanning without cooling interruptions, increases scanning area capacity, and extends X-ray source lifespan, improving image quality and throughput while reducing costs.
Implementation Method 1
Conventional scanners, such as those exemplified by U.S. Pat. No. 7,873,142 B2, suffer from a problem of fast overheating of X-Ray source
Implementation Method 2
an electromagnetic drive for precise positioning and image generation
Data Source
AI summary
An X-ray imaging system includes a frame; a gantry mounted on the frame; an electromagnetic linear drive coupled to the gantry for translating the gantry in a horizontal direction; a C-arm mounted on the gantry, the C-arm rotatable across at least a 90 degree angle; an X-ray source mounted to one end of C-arm; an X-ray detector array mounted to the opposite end of the C-arm. The array is formed of a plurality of array elements, each array element formed of a plurality of linear detectors. Each array element is mounted perpendicular to a radial line between a focal spot of the X-ray source and a middle of each array element, and the X-ray detector array has a focal point at the X-ray source.