FPD Navigation With Multi-Position Vessel Imaging
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Solution Overview
Problem
Existing FPD systems struggle to guide an appropriate imaging position for capturing images of target blood vessels, leading to incorrect positional relations among blood vessels, lesions, and medical devices during procedures like CTO re-opening, affecting the ability to correctly advance medical devices.
Innovation Solution
A FPD navigation device that acquires multiple images from different positions, derives position information, and outputs a recommendation range for optimal FPD imaging positions, guiding technicians to correct positioning using a display screen and potentially automating the FPD's operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a FPD is used to take images of blood vessels, then image quality and exposure efficiency are improved, but the ability to guide appropriate imaging positions is insufficient
Solution Approach 1:
The patent introduces an image guidance system that processes fluoroscopic images and generates overlay images with recommended imaging positions. This intermediary system bridges the gap between the FPD's high image quality capability and the need for operational guidance, by calculating optimal FPD positions and displaying them as visual recommendations to operators.
Solution Approach 2:
The system provides feedback by displaying overlay images that show recommended imaging positions based on the current FPD position and target blood vessel location. This feedback loop allows operators to adjust the FPD position according to the visual guidance, improving both ease of operation and imaging accuracy.
2Measurement precision
If multiple images from different positions are acquired to determine blood vessel position, then positioning accuracy is improved, but the complexity of the system increases
Solution Approach 1:
The image guidance system performs multiple functions using a unified processing framework: it acquires fluoroscopic images, calculates blood vessel positions, determines optimal FPD imaging positions, and generates visual overlay displays. This multi-functional approach achieves high positioning accuracy without proportionally increasing system complexity.
Solution Approach 2:
The system creates overlay images that are visual copies or representations of the actual anatomical structures and recommended positions. These overlay images serve as simplified models that convey complex spatial information in an easily interpretable format, reducing the cognitive complexity for operators while maintaining high positioning accuracy.
3Loss of information
If the FPD imaging position is not appropriate, then the ability to visualize positional relations is improved, but the correctness of medical device advancement is compromised
Solution Approach 1:
The system performs preliminary calculation of optimal FPD imaging positions before actual imaging and medical device advancement. By pre-determining the recommended positions based on blood vessel anatomy and target locations, the system ensures that operators have accurate positional information available in advance, which is critical for reliable medical device advancement.
Solution Approach 2:
The patent replaces manual trial-and-error positioning methods with an automated image processing and calculation system. This substitution of mechanical/manual positioning with computational guidance eliminates the uncertainty and information loss associated with inappropriate FPD positioning, thereby ensuring the correctness of medical device advancement.
Data Source
AI summary
A FPD navigation device includes an image acquiring portion that acquires, from a FPD (flat panel detector), a first image including an image of a target blood vessel taken at a first position, and a second image including an image of the target blood vessel taken at a second position different from the first position; a position information acquiring portion that acquires position information on the target blood vessel from the first image, the second image, position information on the first position, and position information on the second position; and a recommendation range output portion that outputs, from the position information on the target blood vessel, a FPD imaging position recommendation range representing a range of an imaging position of the FPD recommended for acquiring an image of the target blood vessel.