Mitral Valve Geometry Reconstruction from Echocardiography
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Solution Overview
Problem
Existing methods for reconstructing mitral valve geometry from echocardiography images lack accuracy and personalization, and cardiovascular CT, while more accurate, is limited by high cost, radiation exposure, and inability to provide hemodynamic characterization, making it unsuitable for routine clinical use.
Innovation Solution
A computer-implemented method that generates meshes of the open and closed mitral valve based on echography images, identifies papillary muscle tips, and deforms chordae geometry to accurately represent the mitral valve anatomy, using image-based information from different heart cycle phases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If cardiovascular CT is used to reconstruct mitral valve geometry, then spatial resolution and accuracy are improved, but cost, radiation exposure, and acquisition time increase
Solution Approach 1:
The patent creates a virtual 3D model (copy) of the mitral valve from 2D echocardiography images, avoiding the need for direct 3D imaging with CT. This copying approach achieves accurate geometric representation without exposing patients to ionizing radiation, resolving the contradiction between measurement precision and harmful factors
Solution Approach 2:
The patent replaces the mechanical/physical CT imaging system with a computational image processing system that reconstructs 3D geometry from 2D echocardiography data. This substitution eliminates radiation exposure while maintaining geometric accuracy through mathematical reconstruction algorithms
2Measurement precision
If cardiovascular CT is used to reconstruct mitral valve geometry, then spatial resolution is improved, but equipment cost and acquisition time increase
Solution Approach 1:
The patent creates a virtual 3D model (copy) of the mitral valve from 2D echocardiography images, avoiding the need for expensive CT equipment. This copying approach achieves accurate geometric representation using readily available echocardiography systems, resolving the contradiction between measurement precision and device complexity
Solution Approach 2:
The patent makes the echocardiography system multi-functional by enabling it to perform both 2D imaging and 3D geometric reconstruction. This universality eliminates the need for separate expensive CT equipment while maintaining measurement precision through computational reconstruction
3Ease of manufacture
If traditional image segmentation methods are used to reconstruct mitral valve geometry, then implementation simplicity is improved, but geometric accuracy and personalization are worsened
Solution Approach 1:
The patent employs dynamic adaptive reconstruction that adjusts to the specific geometric characteristics of each patient's mitral valve. The method dynamically identifies key anatomical landmarks and adapts the reconstruction algorithm to preserve individual geometric features, achieving high accuracy without sacrificing implementation simplicity
Solution Approach 2:
The patent changes the parameters of the reconstruction process based on the specific echocardiography images obtained from each patient. By adjusting reconstruction parameters to match individual anatomical variations, the method achieves personalized geometric accuracy while maintaining ease of implementation through automated parameter optimization
Data Source
AI summary
A computer-implemented method, a computer program, a storage medium, and a system for reconstructing a geometry of the mitral valve of a subject as open and as closed, based on a sequence of echography images acquired from the subject. The sequence of echography images represents the mitral valve apparatus during at least one heart cycle.