3D Prosthetic Valve Opening Evaluation for Post-TAVI PCI
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Solution Overview
Problem
The difficulty in identifying and selecting an appropriate cell in a prosthetic valve for catheter insertion into the coronary artery ostium post-TAVI due to the prosthetic valve's complex structure and varying patient anatomy, making conventional PCI more challenging.
Innovation Solution
A medical image processing apparatus and method that specifies the position of a region of interest and openings in a three-dimensional medical image, evaluates the accessibility of these openings for catheter passage, and provides evaluation information to guide catheter insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a prosthetic valve with a complicated structure including a mesh-like frame and multiple cells is used for TAVI, then the treatment effectiveness for aortic valve stenosis is improved, but the difficulty of identifying and selecting appropriate cells for subsequent PCI procedures increases
Solution Approach 1:
The prosthetic valve frame is segmented into multiple cells with unique identifiers, allowing individual cell identification and selection for catheter insertion. The evaluation unit divides the complex structure into manageable units (cells) that can be individually assessed for accessibility to the coronary artery ostium.
Solution Approach 2:
A three-dimensional medical image serving as an intermediary is generated to visualize the spatial relationship between the prosthetic valve cells and the coronary artery ostium. This intermediate representation enables clinicians to identify suitable cells without directly manipulating the complex physical structure.
2Device complexity
If the positional relationship between the coronary artery ostium and prosthetic valve cells is not clearly identified, then the complexity of the procedure is reduced, but the accuracy of catheter insertion decreases
Solution Approach 1:
The problem is solved by transitioning from two-dimensional angiographic images to a three-dimensional medical image representation. This dimensional change enables accurate visualization of the spatial relationship between the coronary artery ostium and prosthetic valve cells, improving measurement precision without adding procedural complexity.
Solution Approach 2:
The manual trial-and-error approach to catheter insertion is replaced with a computational evaluation system that automatically assesses cell accessibility based on three-dimensional imaging data. This substitution of mechanical exploration with computational analysis improves accuracy while maintaining procedure simplicity.
3Loss of time
If conventional PCI procedures are performed without specialized evaluation of cell accessibility, then the procedure time is reduced, but the success rate of catheter insertion into the coronary artery ostium decreases
Solution Approach 1:
The evaluation of cell accessibility is performed in advance during the TAVI procedure using three-dimensional imaging and computational analysis. This preliminary assessment identifies suitable cells before the PCI procedure begins, ensuring high success rate without extending overall procedure time, as the evaluation integrates seamlessly into the existing workflow.
Data Source
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AI summary
According to one embodiment, a medical image processing apparatus includes a first specifying unit, a second specifying unit, and an evaluation unit. The first specifying unit specifies a position of a region of interest of a biological organ from a three-dimensional medical image including image information regarding a treatment device having a plurality of openings. The second specifying unit specifies positions of the openings from the three-dimensional medical image. The evaluation unit evaluates at least one of the openings based on the position of the region of interest and positions of the openings.