Optical Sensor Guided Mobile X-Ray Imaging Dosage Control
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Solution Overview
Problem
Conventional X-ray imaging systems face inaccuracies and prolonged exposure due to manual adjustments and misalignment, leading to unacceptable images and increased radiation exposure for patients, especially in mobile X-ray systems.
Innovation Solution
A method and system that utilize an optical sensor to determine pre-shot and main-shot parameters for X-ray imaging, allowing for precise adjustment of the X-ray device to minimize exposure by generating pre-shot and main-shot X-ray images with varying dosages, optimizing image quality and reducing radiation exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual positioning and adjustment of X-ray source and detector is used, then ease of operation is improved, but manufacturing precision deteriorates due to positioning inaccuracies and misalignment
Solution Approach 1:
The patent replaces manual mechanical positioning with an automated optical guidance system. Optical sensors capture images of anatomical landmarks, and image processing algorithms automatically calculate optimal positioning parameters for the X-ray source and detector, eliminating reliance on operator visual estimation and manual adjustment.
Solution Approach 2:
The system performs self-positioning by automatically determining optimal geometric parameters based on optical images of the patient's anatomy. The system independently calculates and adjusts source-to-detector distance, source-to-patient distance, and detector orientation without requiring manual intervention, achieving both ease of operation and high positioning precision.
2Manufacturing precision
If repeated imaging cycles are performed to achieve acceptable images, then manufacturing precision is improved, but object-affected harmful factors worsen due to prolonged radiation exposure
Solution Approach 1:
The patent performs preliminary optical imaging to capture anatomical landmark positions before X-ray exposure. This preliminary optical assessment allows the system to pre-calculate optimal X-ray imaging parameters, ensuring high image quality from the first X-ray exposure and eliminating the need for repeated imaging cycles that would increase radiation exposure.
Solution Approach 2:
The patent introduces optical imaging as an intermediary step between patient positioning and X-ray imaging. The optical system serves as a mediator that provides precise anatomical information without radiation exposure, allowing the system to plan and execute a single high-quality X-ray exposure with optimal parameters determined from the optical data.
3Manufacturing precision
If high X-ray dosage is used for detailed imaging, then manufacturing precision is improved, but object-affected harmful factors worsen due to increased radiation exposure
Solution Approach 1:
The patent applies local quality by using optical imaging to identify specific anatomical regions of interest and their precise spatial relationships. This localized anatomical understanding allows the system to concentrate X-ray dosage only on the necessary regions with optimized parameters, achieving detailed imaging quality while minimizing overall radiation exposure to the patient.
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 minimizes patient exposure to X-ray radiation while ensuring optimal imaging quality by using a low initial X-ray dosage for precise positioning and a higher dosage for detailed imaging, reducing the need for repeated cycles and improving image accuracy.
Implementation Method 1
an optical image of a region of interest in a subject obtained from an optical sensor
Implementation Method 2
A typical radiography system uses X-rays attenuated by a subject to impact a film or a digital X-ray detector to generate an X-ray image
Data Source
AI summary
A method for X-ray imaging includes determining one or more pre-shot parameters corresponding to a region of interest in a subject based on an optical image of the region of interest obtained from an optical sensor. The method further includes controlling an X-ray device to generate a pre-shot X-ray image using a first X-ray dosage, based on the one or more-pre-shot parameters. The method also includes determining at least one main-shot parameter based on the pre-shot X-ray image. The method includes controlling the X-ray device to generate a main-shot X-ray image using a second X-ray dosage greater than the first X-ray dosage, based on the at least one main-shot parameter.