X-ray Detection Device Incomplete Cycle Estimation
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Solution Overview
Problem
Current CT image acquisition methods face errors in signal quantification due to X-ray tube discontinuities, such as changes in spectrum or shut-off periods, which are not effectively addressed by existing readout architectures.
Innovation Solution
A detection device comprising a sensor, electronics board with a capacitor integrator, capacitor discharge analyzer, counter, and processor unit that estimates incomplete cycles caused by radiation discontinuities, allowing for correction and improved image acquisition by modifying gain and eliminating crosstalk across frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If X-ray tube is shut off for short period or spectrum changes (discontinuity), then spectral information can be acquired, but signal quantification error occurs
Solution Approach 1:
The system performs preliminary action by storing the last valid signal value before a discontinuity occurs. When a discontinuity is detected (X-ray shut-off or spectrum change), this stored preliminary value is used to compensate for the incomplete integration cycle, thereby maintaining signal quantification accuracy despite the interruption.
Solution Approach 2:
The system implements feedback by continuously monitoring the integration signal and detecting discontinuities in real-time. When a discontinuity is detected, the system activates a compensation mechanism that uses the stored last valid signal to correct the affected measurement, ensuring accurate spectral information acquisition.
2Measurement precision
If integration period is varied to accommodate discontinuities, then signal accuracy can be maintained, but device complexity increases
Solution Approach 1:
The system extracts and separates the compensation function from the main integration circuitry. By isolating the discontinuity detection and compensation logic as a distinct mechanism that operates on stored signal values, the solution maintains signal accuracy without significantly increasing the complexity of the core readout architecture.
3Device complexity
If standard readout architecture is used, then device simplicity is maintained, but spectral separation and quantum-to-noise ratio deteriorate
Solution Approach 1:
The system performs preliminary action by storing the last valid signal value before a discontinuity occurs. When a discontinuity is detected (X-ray shut-off or spectrum change), this stored preliminary value is used to compensate for the incomplete integration cycle, thereby maintaining signal quantification accuracy despite the interruption.
Solution Approach 2:
The system implements feedback by continuously monitoring the integration signal and detecting discontinuities in real-time. When a discontinuity is detected, the system activates a compensation mechanism that uses the stored last valid signal to correct the affected measurement, ensuring accurate spectral information acquisition.
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 solution enables accurate estimation and correction of incomplete cycles, enhancing spectral separation and quantum-to-noise ratio, reducing errors and the need for varying integration periods, thus improving CT image quality.
Implementation Method 1
at least one sensor adapted to provide a current in response to electromagnetic radiation exposure
Data Source
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AI summary
The present invention relates to a detection device for X-rays, an imaging system and a method for detecting electromagnetic radiation using a detection device for X- rays, wherein an estimate of an incomplete measurement is acquired prior to a discontinuity of the electromagnetic radiation, wherein the discontinuity is a change or interruption in a beam or in an intensity of the electromagnetic radiation.