3D CT Valve Opening Evaluation for Post-TAVI Coronary Access
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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 ostium of a coronary artery post-TAVI due to the prosthetic valve's complex structure and varying patient-specific coronary artery positions, making conventional PCI more challenging.
Innovation Solution
An X-ray CT apparatus and medical image processing system that reconstructs a three-dimensional medical image to specify the position of a region of interest and the openings of a prosthetic valve, allowing for evaluation and guidance of catheter insertion based on the relationship between the prosthetic valve and the coronary artery ostium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a prosthetic valve is implanted via TAVI, then aortic valve stenosis is treated, but the complex structure of the prosthetic valve makes it difficult to identify and select appropriate cells for catheter insertion during subsequent PCI
Solution Approach 1:
The patent applies color mapping to visualize different regions of the prosthetic valve and coronary arteries in three-dimensional images. By assigning distinct colors to different anatomical structures and cell locations, the system enables operators to easily distinguish and identify appropriate cells for catheter insertion, directly addressing the difficulty caused by the complex prosthetic valve structure
Solution Approach 2:
The patent introduces a medical image processing system as an intermediary between the complex prosthetic valve structure and the operator. This system automatically detects, segments, and visualizes the spatial relationships between the prosthetic valve cells and coronary arteries, providing clear guidance for catheter insertion without requiring the operator to manually interpret complex anatomical structures
2Adaptability or versatility
If conventional PCI is performed after TAVI, then coronary artery disease can be treated, but the procedure becomes more difficult due to the prosthetic valve on the catheter path
Solution Approach 1:
The patent performs preliminary analysis and visualization of the spatial relationships between prosthetic valve cells and coronary arteries before the PCI procedure. By pre-identifying accessible cells and planning catheter pathways using three-dimensional imaging, the system enables operators to select optimal insertion points and approaches, significantly easing the实际操作 of catheter insertion through the prosthetic valve
Solution Approach 2:
The patent transitions from two-dimensional imaging to three-dimensional visualization to assess catheter accessibility through the prosthetic valve. By evaluating spatial relationships, angles, and distances in three dimensions, the system identifies optimal cells for catheter insertion that would be difficult to determine from conventional two-dimensional images alone
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
Facilitates precise catheter guidance during PCI by accurately determining the accessibility of prosthetic valve cells, enhancing the efficacy of post-TAVI interventions.
Implementation Method 1
an X-ray tube configured to emit X-rays to a subject in which a treatment device having a plurality of openings is retained
Implementation Method 2
an X-ray detector configured to detect the X-rays transmitted through the subject
Data Source
AI summary
According to one embodiment, an X-ray CT apparatus includes an X-ray tube, an X-ray detector, reconstruction circuitry, and processing circuitry. The processing circuitry specifies a position of a region of interest of a biological organ from the three-dimensional medical image. The processing circuitry specifies positions of the openings from the three-dimensional medical image. The processing circuitry evaluates at least one of the openings based on the position of the region of interest and positions of the openings. A medical image processing apparatus includes the processing circuitry.