Flat Panel Detector Radiation Detection Integration
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Solution Overview
Problem
Current automatic exposure detection technologies in radiation imaging rely on external sensors, which are limited in number and can lead to wasted radiation doses and poor image quality due to synchronization delays, necessitating re-photography and increasing medical risks.
Innovation Solution
A radiation detection device integrated into a flat panel detector (FPD) with a driving device generating output signals with specific pulse widths to efficiently detect radiation and manage photodiode discharge, allowing for automatic exposure without external sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If external sensors are used for automatic exposure detection, then radiation detection capability is provided, but synchronization delays occur and image quality deteriorates
Solution Approach 1:
The patent merges the radiation detection function directly into the FPD by integrating photodiodes within the FPD structure itself, eliminating the need for separate external sensors. This integration ensures that radiation detection and image capture occur simultaneously within the same device, resolving the synchronization delay issue while maintaining detection accuracy.
Solution Approach 2:
The patent introduces a control device as an intermediary that manages the timing and coordination between radiation detection and image capture processes. The control device receives signals from the integrated photodiodes and controls the FPD operation accordingly, ensuring precise synchronization without the delays associated with external sensor communication.
2Extent of automation
If external sensors are used for radiation detection, then automatic exposure detection is enabled, but radiation dose is wasted and medical risk increases
Solution Approach 1:
By combining the radiation detection and image capture functions into a single integrated FPD system, the patent eliminates the need for separate external sensors that cause radiation dose waste. The integrated photodiodes detect radiation simultaneously with image capture, ensuring that every unit of radiation contributes to both detection and imaging, thereby reducing overall radiation waste and medical risk.
3Extent of automation
If synchronization between external sensor and thin-film transistor panel is implemented, then automatic exposure control is achieved, but device complexity increases
Solution Approach 1:
The patent simplifies the system by merging the radiation detection function into the FPD structure itself, eliminating the need for separate external sensors and their associated synchronization mechanisms. The integrated photodiodes are naturally synchronized with the FPD operation, significantly reducing device complexity while maintaining automatic exposure control capability.
Solution Approach 2:
The integrated FPD system performs self-synchronization through its internal control device, which automatically coordinates radiation detection and image capture without requiring complex external synchronization mechanisms. The system serves itself by using its own integrated components to manage timing and coordination, reducing overall system complexity.
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 reduces medical risks by optimizing radiation detection and image quality within the FPD, eliminating the need for re-photography and minimizing radiation waste, while providing improved sensitivity and stability.
Implementation Method 1
The FPD contains a thin-film transistor panel including photodiodes therein
Data Source
AI summary
A radiation detection device includes a driving device used to generate an output signal according to a source signal. The source signal includes a rising duration corresponding to a first pulse and a second pulse of the output signal. The first pulse has a pulse width greater than the second pulse.