X-Ray Tube Calibration by Scanning Protocol for Faster Imaging
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Solution Overview
Problem
Current X-ray tube calibration methods in medical imaging require extensive exposure, leading to prolonged calibration times and reduced service life of the X-ray tube.
Innovation Solution
A method for medical imaging that reduces the number of exposure detections by generating calibration data based on a scanning protocol, using existing calibration data when available and updating it as needed, thereby optimizing the calibration process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If extensive exposure detection is performed for X-ray tube calibration under all preset scanning conditions, then calibration accuracy and imaging quality are improved, but calibration time is prolonged and X-ray tube service life is reduced
Solution Approach 1:
The patent segments the calibration process by dividing scanning conditions into commonly used and rarely used categories. Calibration data is obtained for commonly used scanning protocols through actual exposure detection, while rarely used protocols rely on predicted or interpolated data. This segmentation reduces the total exposure required while maintaining accuracy for the majority of use cases.
Solution Approach 2:
The patent applies partial action by performing full calibration exposure detection only for commonly used scanning protocols rather than all preset protocols. This partial calibration approach reduces the total exposure dose and time while maintaining sufficient accuracy for the most frequently performed examinations.
2Measurement precision
If extensive exposure detection is performed for X-ray tube calibration under all preset scanning conditions, then calibration accuracy and imaging quality are improved, but the service life of the X-ray tube is reduced
Solution Approach 1:
The patent segments the calibration process by dividing scanning conditions into commonly used and rarely used categories. Calibration data is obtained for commonly used scanning protocols through actual exposure detection, while rarely used protocols rely on predicted or interpolated data. This segmentation reduces the total exposure required while maintaining accuracy for the majority of use cases.
Solution Approach 2:
The patent applies partial action by performing full calibration exposure detection only for commonly used scanning protocols rather than all preset protocols. This partial calibration approach reduces the total exposure dose and time while maintaining sufficient accuracy for the most frequently performed examinations.
3Measurement precision
If calibration data is obtained for all scanning protocols through exposure detection, then imaging quality is ensured, but the efficiency of the medical imaging system is reduced
Solution Approach 1:
The patent performs preliminary calibration data acquisition for commonly used scanning protocols during system setup or periodic calibration. This preliminary action stores calibration data in advance, allowing rapid retrieval and application to patient scans without requiring time-consuming exposure detection during actual imaging procedures, thereby improving system efficiency.
Solution Approach 2:
The patent creates a database of calibration data for commonly used scanning protocols that can be quickly retrieved and applied to patient scans. This copying approach allows the system to use pre-computed calibration information rather than performing real-time calibration measurements, significantly improving imaging speed and system efficiency while maintaining quality.
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
Ensures good imaging quality while minimizing the frequency of calibration operations, extending the X-ray tube's lifespan and enhancing the efficiency of the medical imaging system.
Implementation Method 1
an X-ray tube emits an X-ray. The X-ray passes through a test object and attenuates
Implementation Method 2
A detector receives the attenuated X-ray, and converts the same into an electrical signal
Data Source
AI summary
The present disclosure relates to a method for imaging and an imaging system. The method includes obtaining a scanning protocol for an examination subject, which includes: obtaining calibration data associated with the scanning protocol in response to a commonly used scanning protocol calibration data set of a medical imaging system including the calibration data; or performing a calibration operation in response to a commonly used scanning protocol calibration data set of a medical imaging system not including calibration data associated with the scanning protocol, to generate calibration data associated with the scanning protocol. The method further includes scanning the examination subject based on the scanning protocol, to obtain raw imaging data, and performing reconstruction using the calibration data associated with the scanning protocol and the raw imaging data, to obtain a medical image of a scanned subject.