Radiographic Image Detection Device Synchronization
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Solution Overview
Problem
The existing radiographic image detection devices face challenges in ensuring reproducibility of images due to noise generated by the interaction of circuit units and power supply units, leading to inconsistent artifacts in radiographic images, which affects the reliability of index values related to bones.
Innovation Solution
A radiographic image detection device is designed with a synchronizing signal supply unit that synchronizes the operations of multiple power supply units, ensuring consistent noise levels and artifacts across imaging operations, thereby enhancing image reproducibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple power supply units are provided for each sensor panel and circuit unit, then the device can support multiple sensor panels and perform energy subtraction imaging, but noise is generated by the interaction of each circuit unit and power supply unit causing artifacts in radiographic images
Solution Approach 1:
The device is divided into multiple independent imaging chains, each consisting of a sensor panel, circuit unit, and power supply unit. Each chain operates independently with its own dedicated power supply, which segments the noise sources and prevents interaction between different power supply units, thereby reducing artifacts while maintaining the capability for energy subtraction imaging
Solution Approach 2:
A synchronizing signal supply unit is introduced as an intermediary component that provides synchronized control signals to multiple power supply units. This mediator ensures that all power supply units operate in coordination with the same timing signals, reducing random noise interactions while preserving the versatility for advanced imaging techniques
2Reliability
If noise from circuit unit and power supply unit interaction varies in each imaging operation, then different artifacts are generated in each imaging operation, but this makes it difficult to ensure reproducibility of radiographic images
Solution Approach 1:
The power supply units operate with periodic switching at synchronized frequencies, and the synchronizing signal supply unit ensures that all units follow the same periodic cycle. This periodic and synchronized operation makes the noise characteristics consistent across imaging operations, allowing for reproducible artifacts that can be corrected or eliminated through processing
Solution Approach 2:
The synchronizing signal supply unit provides feedback control by distributing synchronized timing signals to all power supply units based on the imaging operation status. This feedback mechanism ensures that all units respond consistently to the same control signals, reducing variable artifacts and improving image reproducibility
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 synchronization of power supply units results in consistent radiographic images, improving the reliability of index values related to bones by minimizing variations in artifacts, thus ensuring reproducibility and accuracy.
Implementation Method 1
a plurality of pixels that accumulate charge in response to radiation which has been emitted from a radiation source and then transmitted through a subject
Implementation Method 2
The power supply unit is provided with a switching power supply that outputs a desired voltage using a pulse modulation method, for example, a pulse width modulation (hereinafter, abbreviated to PWM) method
Data Source
AI summary
A first power supply unit supplies power to a first sensor panel and a first circuit unit. A second power supply unit supplies power to a second sensor panel and a second circuit unit. A synchronizing signal supply unit of a control unit supplies a synchronizing signal for synchronizing the operations of a switching power supply of the first power supply unit and a switching power supply of the second power supply unit to the switching power supply of the first power supply unit and the switching power supply of the second power supply unit. Since the operations of the first and second power supply units are the same in each imaging operation, it is possible to ensure the reproducibility of an X-ray image.