Photon-Counting CT Detector Thermal Stabilization by Pseudo Operation
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Solution Overview
Problem
Semiconductor detectors in photon counting CT apparatuses exhibit significant temperature fluctuations due to varying heat generation during X-ray exposure, affecting detection accuracy and image quality.
Innovation Solution
The apparatus performs a pseudo operation with processing circuitry during non-scanning times to stabilize the temperature of semiconductor detectors by generating heat without actual X-ray exposure, using a pseudo operation control mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the processing circuitry operates without X-ray exposure during idle time, then the distance between semiconductor detector and processing circuitry can be minimized for rapid data reading, but the temperature of the semiconductor detector becomes unstable affecting detection accuracy
Solution Approach 1:
The processing circuitry performs a pseudo operation during idle time before actual X-ray exposure to pre-generate heat and stabilize the temperature of the semiconductor detector. This preliminary action ensures that when actual scanning begins, the detector is already at its optimal operating temperature, eliminating temperature fluctuations that would affect detection accuracy while maintaining the short distance configuration for rapid data reading.
2Productivity
If the processing circuitry generates heat during X-ray exposure, then detection data can be processed rapidly, but the temperature of the semiconductor detector fluctuates significantly affecting image quality
Solution Approach 1:
The system performs a pseudo operation during idle time to pre-generate the necessary heat in the processing circuitry and semiconductor detector. This ensures that when actual X-ray exposure and data processing begin, the detector is already at its optimal operating temperature, allowing rapid processing efficiency while maintaining temperature stability and preventing image quality degradation.
3Measurement precision
If the semiconductor detector is kept at constant temperature, then detection accuracy is maintained, but the processing circuitry cannot rapidly process detection data due to thermal equilibrium requirements
Solution Approach 1:
The processing circuitry performs a pseudo operation during idle time to pre-stabilize the temperature of the semiconductor detector before actual X-ray exposure. This preliminary temperature stabilization allows the detector to be at its optimal operating temperature in advance, enabling both high detection accuracy and rapid data processing speed when actual scanning begins, as no thermal equilibrium adjustment is needed during productive time.
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 approach maintains consistent detector temperature, improving the accuracy and stability of detection results by reducing temperature fluctuations.
Implementation Method 1
the processing circuitry operates according to the number of X-ray photons incident on the semiconductor detector, the amount of heat generated varies during exposure or non-exposure
Data Source
AI summary
A photon counting CT apparatus of an embodiment has a detector module including a semiconductor detector and first processing circuitry configured to process detection data detected by the semiconductor detector. The first processing circuitry is configured to generate heat by performing a pseudo operation during a period in which X-ray exposure is stopped.