X-ray CT Imaging Device Revolution Plane Control
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Solution Overview
Problem
Conventional X-ray CT imaging devices face challenges in performing CT imaging while keeping the exposure dose low for high sensitivity sites, such as the submandibular gland, parotid gland, thyroid gland, or lens of the eyeball, which are often within the X-ray radiation area, leading to potential harm during imaging.
Innovation Solution
An X-ray CT imaging device with a revolution section that revolves an X-ray generation source and detector around a subject, a control section that adjusts the X-ray revolution plane and range to minimize exposure to high sensitivity sites, and a high sensitivity site specification section to identify and mitigate radiation to sensitive areas, allowing for controlled CT imaging with reduced exposure doses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the X-ray radiation area is set to include the imaging target site, then the imaging quality is improved, but the exposure dose to high sensitivity sites increases
Solution Approach 1:
The patent segments the radiation control by dividing the revolution range into multiple sections. The control section specifies different revolution start and end positions to create segmented radiation paths that avoid high sensitivity sites while maintaining coverage of the imaging target site. This allows the X-ray beam to be directed at the target area without passing through sensitive regions like the lens of the eyeball.
Solution Approach 2:
The patent applies local quality by implementing position-dependent radiation control. The control section adjusts the revolution range based on the specific spatial relationship between the imaging target site and high sensitivity sites. Different regions of the revolution path are assigned different operational characteristics - full radiation exposure for the target site, restricted or zero exposure for high sensitivity sites - thereby optimizing imaging quality locally while minimizing harmful effects in specific areas.
2Adaptability or versatility
If the revolution range is increased to improve imaging coverage, then the imaging completeness is improved, but the radiation exposure to surrounding areas increases
Solution Approach 1:
The patent implements dynamic adjustment of the revolution range based on real-time spatial relationships. The control section dynamically calculates the optimal revolution start and end positions by considering the relative positions of the imaging target site, high sensitivity sites, and the moving X-ray source. This dynamic control allows the system to adapt the radiation path continuously during the revolution, maximizing imaging coverage while minimizing exposure to surrounding areas through real-time trajectory optimization.
Solution Approach 2:
The patent changes key parameters of the radiation process - specifically the revolution start position, revolution end position, and revolution range - to optimize the balance between imaging coverage and radiation exposure. By adjusting these parameters based on the spatial configuration of the target and sensitive sites, the system achieves complete imaging coverage of the target area while restricting the radiation path to avoid unnecessary exposure to surrounding tissues and high sensitivity sites.
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 CT imaging on the imaging target site with certainty while maintaining a low exposure dose for high sensitivity sites, ensuring safer and effective imaging procedures.
Implementation Method 1
an X-ray beam is directed toward a subject to collect projection data, and the obtained projection data is re-constructed on a computer to generate a CT image
Data Source
AI summary
According to an X-ray imaging device for performing CT imaging, a main body control section controls at least one of an X-ray revolution plane formed by an X-ray cone beam along with the revolution of a revolving arm and a revolution range of the revolving arm in accordance with a CT imaging area accepted by an imaging area setting screen. Such control is performed in order to decrease X-ray radiation to a high sensitivity site in the area that revolves during the CT imaging, the high sensitivity site being positionally set in a biological body as a site that is sensitive to X-rays.