X-Ray Generator Aging Detection Through CT Calibration Scans
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Solution Overview
Problem
The accuracy of substance discrimination in Dual Energy CT systems decreases due to age-related deterioration of X-ray generating devices, and users are not alerted to this deterioration until it causes noise or artifacts in CT images, necessitating a method to notify users of impending device degradation before image quality deteriorates.
Innovation Solution
A medical system and storage medium that calculate characteristic values of X-rays based on detector data during calibration scans, determining whether to output an alert based on changes in absorption coefficients of reference substances over time, thereby notifying users of potential device deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If DECT technology with kV switching is used to improve substance discrimination accuracy, then substance discrimination capability is improved, but the system becomes vulnerable to age-related deterioration of the X-ray generating device
Solution Approach 1:
The system performs preliminary detection of X-ray characteristic value changes through calibration scans before actual deterioration affects image quality. By calculating characteristic values during routine calibration scans and comparing them against reference values, the system proactively identifies degradation trends in the X-ray generating device, enabling preventive maintenance before substance discrimination accuracy is compromised
2Device complexity
If no monitoring system is implemented to reduce device complexity, then system complexity is reduced, but deterioration is only detected when image quality degrades
Solution Approach 1:
The monitoring function is integrated into the existing calibration scan routine, allowing the same calibration process to serve dual purposes: maintaining system accuracy and monitoring device deterioration. The processor calculates characteristic values from calibration data and compares them against stored reference values, enabling deterioration detection without requiring separate monitoring hardware or additional scans, thus maintaining low system complexity while preserving measurement precision
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
Enables early notification of X-ray generating device deterioration, preventing a decrease in substance discrimination accuracy by alerting users before image quality degradation occurs.
Implementation Method 1
a detector for detecting X-rays irradiated from the X-ray generating device
Data Source
AI summary
Systems and methods to notify a user that an X-ray generating device may be deteriorating due to aging before the image quality of a CT image deteriorates are described. A medical system may include an X-ray generating device, a detector for detecting X-rays irradiated from the X-ray generating device, and one or more processors that execute instructions to calculate a characteristic value of the X-rays irradiated from the X-ray generating device based on data on the X-rays detected by the detector, every time a prescribed calibration scan is executed, and determine whether to output an alert based on change in the characteristic value over time.