Multi-Angle X-Ray Treatment Tool Recognition Without Motion Monitors
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Solution Overview
Problem
Existing X-ray imaging devices struggle to accurately determine the three-dimensional position of a treatment tool during intraoperative procedures due to body movements, especially when using cone beam CT, which requires external body movement monitors and complicates the imaging setup.
Innovation Solution
An X-ray imaging device that calculates the three-dimensional position of a treatment tool by processing multiple X-ray images taken at different angles or times, selecting the combination with the highest accuracy to minimize the influence of body movements without requiring external signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If cone beam CT is used to acquire three-dimensional images by rotating X-ray source and detector, then three-dimensional position of treatment tool can be grasped, but imaging time increases and positional accuracy decreases when subject body moves during rotation
Solution Approach 1:
The patent divides the imaging process into multiple discrete X-ray images taken at different angles rather than continuous rotation, selecting specific angular positions to capture images that will be processed together to calculate three-dimensional position, thereby reducing total imaging time while maintaining accuracy
Solution Approach 2:
The patent performs preliminary selection of image combinations with highest calculation accuracy before final three-dimensional position calculation, pre-identifying optimal image pairs from multiple acquired images to eliminate body movement influence and reduce processing time
2Measurement precision
If external body movement monitor is added to reduce influence of body movement on three-dimensional position calculation, then position accuracy improves, but device complexity increases
Solution Approach 1:
The patent uses the X-ray imaging device itself to capture multiple images at different angles and performs internal processing to select optimal combinations and calculate three-dimensional position, eliminating the need for external body movement monitoring devices while maintaining accuracy through self-contained image analysis
Solution Approach 2:
The patent uses multiple X-ray images taken at different angles as intermediaries to calculate three-dimensional position without requiring direct body movement monitoring, allowing indirect compensation for body movement through geometric relationships in the images rather than direct physiological monitoring
3Measurement precision
If multiple combinations of X-ray images are processed to select highest accuracy combination, then three-dimensional position calculation accuracy improves, but data processing time increases
Solution Approach 1:
The patent performs preliminary calculation of accuracy parameters for multiple image combinations before final selection, pre-evaluating which combinations will yield highest accuracy so that only the optimal combination undergoes final three-dimensional position calculation, thereby reducing total processing time
Solution Approach 2:
The patent changes the parameter evaluation approach by calculating accuracy metrics for different image combinations and selecting based on these parameters, allowing systematic comparison and selection of optimal image pairs without exhaustive processing of all possible combinations
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
Accurately determines the three-dimensional position of a treatment tool with reduced impact from body movements, ensuring precise imaging without the need for external body movement monitors, thus simplifying the imaging setup.
Implementation Method 1
an X-ray source that emits X-rays; an X-ray detector that faces the X-ray source across an inspection object; a data processing unit that generates an X-ray image of the inspection object based on the X-rays transmitted through the inspection object and detected by the X-ray detector
Data Source
AI summary
Provided is a technique capable of calculating a three-dimensional position of a treatment tool only by processing an X-ray image without using an external signal of a body movement monitor or the like and capable of eliminating an influence of body movement. A plurality of combinations of a plurality of X-ray images from a plurality of X-ray images acquired at different angles or times are used to obtain a parameter serving as an index of calculation accuracy of a three-dimensional position of a treatment tool for each combination and to calculate the three-dimensional position of the treatment tool based on a combination of X-ray images serving as a parameter having the highest accuracy.