X-ray Dosage Control via Operator State Detection
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Solution Overview
Problem
Catheterization under X-ray fluoroscopy requires operators to constantly adjust X-ray dosage, which is burdensome and can lead to adverse effects due to the need for fine control of X-ray exposure, especially when not requiring detailed images, increasing the psychological and physical burden on the operator.
Innovation Solution
An X-ray imaging apparatus equipped with a working-state detecting means and an X-ray dosage control system that automatically adjusts the X-ray dosage based on the operator's working state, reducing the dosage when fine images are not needed by detecting various working-state information such as wire manipulation, operator posture, and biological signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the operator manually adjusts X-ray dosage to minimize exposure, then the subject's radiation burden is reduced, but the operator's psychological and physical burden increases due to constant adjustment requirements
Solution Approach 1:
The system automatically adjusts X-ray dosage based on detected working states without requiring manual operator intervention. The working-state detecting means monitors operator actions and the system self-regulates the X-ray dosage, making the system serve itself rather than requiring constant human control.
Solution Approach 2:
The system implements a feedback loop where the working-state detecting means continuously monitors operator actions and working conditions, and the X-ray dosage control means adjusts the dosage based on this feedback. This closed-loop control eliminates the need for manual adjustment while maintaining optimized radiation levels.
2Measurement precision
If the operator increases X-ray dosage to obtain finer images, then image quality improves, but the subject's radiation exposure increases
Solution Approach 1:
The X-ray dosage is made dynamic rather than static, automatically adjusting based on real-time detection of working states. The dosage increases only when fine images are actually needed (during wire manipulation) and decreases during other operations, optimizing both image quality and radiation exposure.
Solution Approach 2:
The system changes the X-ray dosage parameter dynamically based on detected working states. Instead of maintaining a constant high dosage, the system adjusts the dosage parameter up or down depending on whether fine imaging is required, thereby reducing overall radiation exposure while maintaining image quality when needed.
3Measurement precision
If the operator continuously uses contrast agent to confirm catheter position, then observation accuracy improves, but kidney function burden increases
Solution Approach 1:
The system replaces the chemical method (contrast agent injection) with a detection-based method (working-state detection). Instead of using contrast agent to visually confirm position, the system detects working states such as wire manipulation to infer catheter position, thereby eliminating the harmful chemical substance while maintaining observation accuracy.
4Ease of operation
If the system automatically detects working state, then operator burden is reduced, but device complexity increases
Solution Approach 1:
The working-state detecting means is designed to detect multiple types of working states (wire manipulation, catheter manipulation, surgical tool manipulation, operator posture, biological signals) using a single integrated system. This multi-functionality reduces the need for separate detection systems for each parameter, thereby limiting the increase in overall device complexity.
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 reduces the operator's burden by automatically adjusting X-ray dosage according to the surgical needs, minimizing exposure and maintaining image quality during catheterization procedures without requiring constant manual input, thus enhancing operational efficiency and safety.
Implementation Method 1
irradiates X-rays to a subject from an X-ray generating means, detects X-rays that have penetrated the subject with an X-ray detecting means
Data Source
AI summary
An X-ray imaging apparatus according to one embodiment captures an X-ray image by irradiating a subject with X-rays from an X-ray generating means, and detecting X-rays that have penetrated the subject with an X-ray detecting means, and includes a working-state detecting means and an X-ray dosage control means. The working-state detecting means detects a plurality of types of working-state information related to the working state of the operator performing surgery on the subject. The X-ray dosage control means, based on the plurality of types of detection results detected by the working-state detecting means, controls the X-ray dosage irradiated from the X-ray generating means.