Iterative kVp Control for Low Dose X-Ray Imaging
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Solution Overview
Problem
Current X-ray imaging techniques face challenges in achieving high image quality while minimizing radiation exposure, as they often require higher doses to maintain diagnostic contrast and noise levels, posing health risks and inefficiencies.
Innovation Solution
A non-destructive imaging system that iteratively adjusts drive parameter settings for the X-ray source, starting from the lowest setting, to achieve desired image quality goals, allowing for reduced radiation exposure while maintaining diagnostic image quality through automatic exposure control and strategic selection of kVp and current levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional X-ray imaging techniques use higher radiation doses, then image quality and diagnostic contrast are improved, but patient health risk and radiation exposure increase
Solution Approach 1:
The system changes the kVp parameter (peak voltage) to its lowest achievable setting while maintaining diagnostic image quality. By iteratively testing and adjusting the kVp parameter from lowest to highest settings, the system identifies the minimum radiation dose required to achieve acceptable image quality, thereby reducing patient radiation exposure while preserving diagnostic capability
Solution Approach 2:
The system employs feedback through iterative determination of whether image quality goals are achieved at each kVp setting. The control module continuously evaluates image quality metrics and adjusts the kVp setting accordingly, using feedback from previous iterations to optimize the balance between radiation dose and image quality, ultimately selecting the lowest kVp that meets diagnostic requirements
2Object-affected harmful factors
If X-ray dose is reduced to minimize health risk, then patient safety is improved, but image quality and contrast may deteriorate
Solution Approach 1:
The system dynamically adjusts the kVp setting based on real-time evaluation of image quality goals. Rather than using a fixed kVp value, the system iteratively tests different kVp settings starting from the lowest, evaluating image quality at each step, and dynamically selecting the optimal setting that achieves diagnostic quality with minimum radiation dose
Solution Approach 2:
The system changes physical parameters (kVp, current levels) to optimize the balance between radiation dose and image quality. By systematically varying these parameters from lowest to highest settings and evaluating image quality at each step, the system identifies the minimum parameter values required to achieve diagnostic image quality, thereby reducing radiation exposure without sacrificing necessary image quality
3Object-affected harmful factors
If iterative adjustment of drive parameters is implemented, then optimal balance between dose and image quality is achieved, but system complexity and processing time increase
Solution Approach 1:
The system performs self-service through automatic iterative adjustment of drive parameters. The control module autonomously evaluates image quality goals and adjusts kVp and current settings without requiring manual intervention, thereby managing the complexity internally while providing a simplified interface to users. The system serves itself by automatically optimizing the balance between radiation dose and image 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
The system effectively reduces X-ray dose delivered to patients while maintaining or improving contrast and contrast-to-noise ratios, enabling diagnostically useful images with reduced radiation exposure, thus addressing the limitations of conventional X-ray imaging.
Implementation Method 1
an X-ray illumination source capable of providing illumination, such as X-rays
Data Source
AI summary
Systems, processes and apparatus are described through which non-destructive imaging is achieved, with equivalent or increased contrast, in comparison to conventional approaches, and that facilitate reduced dosage of X-rays delivered to the object or patient being imaged.