X-ray Imaging Apparatus Positioning Image Synthesis
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Solution Overview
Problem
Current X-ray angiography techniques require lengthy positioning processes during PCI treatments, leading to increased surgery time and patient strain due to the need for manual adjustment of imaging directions and positions, which prolongs the processing time for generating and displaying analysis images of target regions like angiostenosis parts.
Innovation Solution
An X-ray imaging apparatus and method that pre-create positioning images under various projection conditions using volume data, allowing for rapid selection and display of the most analogous image, thereby reducing the need for real-time positioning adjustments during imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual positioning process is performed during X-ray imaging to match projection parameters, then image accuracy is improved, but processing time increases significantly
Solution Approach 1:
The patent pre-calculates and stores positioning information (projection parameters, rotation angles, translation vectors) before the actual imaging process. This preliminary action allows the system to automatically retrieve and apply the correct positioning parameters during imaging, eliminating the need for manual positioning adjustments and significantly reducing processing time while maintaining image accuracy.
Solution Approach 2:
The patent creates a digital copy of the positioning information from previous imaging sessions or pre-planned protocols. This copied positioning data is then automatically applied to new imaging sessions, allowing rapid reproduction of accurate positioning without repeating the manual positioning process, thus reducing time loss while preserving measurement precision.
2Adaptability or versatility
If positioning process is performed after imaging starts, then imaging flexibility is maintained, but surgery time increases
Solution Approach 1:
The system performs positioning parameter calculation and storage before imaging begins. This allows the imaging process to start immediately with pre-determined positioning information, maintaining imaging flexibility through automated parameter adjustment while eliminating time-consuming manual positioning during surgery.
Solution Approach 2:
The patent implements a feedback mechanism where positioning information is automatically adjusted based on real-time imaging conditions and pre-stored reference data. This feedback loop allows the system to maintain flexibility in imaging parameters while automatically optimizing positioning, thereby reducing surgery time without compromising adaptability.
3Measurement precision
If projection parameters are manually adjusted for each imaging direction change, then imaging accuracy is maintained, but waiting time for positioning increases
Solution Approach 1:
The patent pre-calculates projection parameters for multiple possible imaging directions and stores them in advance. When imaging direction needs to be changed, the system automatically retrieves the pre-computed parameters for the required direction, eliminating manual adjustment and significantly reducing waiting time while maintaining imaging accuracy through precise parameter selection.
Solution Approach 2:
The system dynamically selects and applies the appropriate pre-stored projection parameters based on the current imaging direction requirements. This dynamic parameter selection allows rapid adaptation to different imaging angles without manual recalculation, maintaining accuracy while minimizing waiting time through automated parameter switching.
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 significantly reduces the time required for positioning and image synthesis, enabling real-time display of analysis images, which aids in reducing operation time, minimizing patient strain, and optimizing the use of contrast agents and radiation exposure.
Implementation Method 1
an imaging unit that irradiates X-rays on a subject and detects X-rays penetrating the subject to generate an X-ray projection image of the subject
Data Source
AI summary
Positioning images are created by a projection-image creating unit before imaging, and the positioning images are grouped and stored by a projection-image storage unit for each preset. When imaging is started, a positioning-information calculating unit calculates positioning parameters using the positioning images stored in the projection-image storage unit. An analysis-image-for-synthesis creating unit creates an analysis image using the positioning parameters, and an analysis-image synthesizing and displaying unit synthesizes the analysis image with a live image and displays a synthesized image. When an imaging direction of an X-ray angiography apparatus is changed, a positioning-information updating unit directly updates the positioning parameters based on an amount of change of the imaging direction.