Epicardial Mapping Using 3D Mesh Projection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The Fast Anatomical Mapping (FAM) algorithm generates a closed 3-dimensional shape that distorts spatial representations of epicardial surfaces, obscuring rear-facing measurements and leading to misleading electroanatomic maps due to spatial errors and hidden data.
Innovation Solution
A method and apparatus that acquire electrical signals from both front-facing and rear-facing locations on the epicardial surface, model the heart as a 3-dimensional mesh of triangles, and project rear-facing data onto front-facing triangles for accurate display, allowing for the construction of a corrected electroanatomic map by identifying and deleting rear-facing triangles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the FAM algorithm generates a closed 3-dimensional shape to represent the epicardial surface, then the spatial representation is complete, but spatial distortion occurs and rear-facing measurements are obscured
Solution Approach 1:
The patent applies dimensionality change by projecting 3D rear-facing measurements onto a 2D display surface. The system determines whether each measurement point faces front or back relative to the observer, and rear-facing points are projected onto the front-facing surface for display. This resolves the contradiction by preserving all measurement information while eliminating spatial obscuration in the visual representation.
2Reliability
If the FAM algorithm produces a volume with front-facing and rear-facing surfaces, then all measurement points are captured, but the rear-facing portions are hidden from view
Solution Approach 1:
The patent uses copying by creating a projected representation of rear-facing measurements on the front-facing surface. Instead of displaying the complex 3D volume with hidden portions, the system copies the electrical signal data from rear-facing points and displays them on the visible front surface, maintaining data reliability while improving visualization clarity.
3Quantity of substance
If measurements are taken at multiple points on the external wall, then comprehensive electroanatomic data is obtained, but spatial distortion occurs in the representation
Solution Approach 1:
The patent applies local quality by treating front-facing and rear-facing measurement points differently in the display process. Each point is evaluated individually for its facing direction, and rear-facing points are selectively projected onto the front surface. This localized approach preserves the comprehensive data set while correcting spatial distortion for each individual measurement point.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Electroanatomic mapping of the epicardium includes acquiring first and second electroanatomic data from first and second epicardial locations, acquiring a closed 3-dimensional image of the epicardium and modeling the image as a 3-dimensional triangular mesh. The first and second locations align with front-facing triangles and rear-facing triangles of the mesh. The second locations are projected from the rear-facing triangles onto the closest front-facing triangles. The first and second electroanatomic data are displayed on the front-facing triangles and the closest front-facing triangles, respectively.