Electro-Anatomical Map Tenting Detection for Catheter Accuracy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Catheter-based RF ablation for pulmonary vein isolation in atrial fibrillation suffers from tenting artifacts in electro-anatomical maps due to catheter impingement on tissue walls, leading to inaccurate anatomical representations.
Innovation Solution
A system and method for detecting and correcting tenting errors in electro-anatomical maps by acquiring multiple position information sets to identify changes in map surfaces, using tenting analysis volumes and visual indicators to alert users of potential errors, allowing for manual or automatic correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the catheter is moved to acquire position information for map generation, then the anatomical map coverage is improved, but tenting artifacts are generated when the catheter impinges on tissue walls
Solution Approach 1:
The system performs preliminary actions by acquiring multiple position information sets before final map generation. It collects position data at different time points, generates intermediate map surfaces, and identifies potential tenting artifacts before committing to the final anatomical map, allowing prevention of inaccurate map representation
Solution Approach 2:
The system implements feedback mechanisms by comparing multiple map surfaces generated from different position information sets. It identifies discrepancies between map surfaces, flags potential tenting artifacts, and uses this feedback to correct the final anatomical map, ensuring accurate representation while maintaining comprehensive coverage
2Manufacturing precision
If multiple position information sets are acquired to detect tenting, then map accuracy is improved, but the procedure time is increased
Solution Approach 1:
The system applies partial action by acquiring position information at strategically selected time points rather than continuously. It generates map surfaces at key moments during catheter movement, identifying tenting artifacts with fewer measurements than would be required for complete continuous monitoring, thus reducing procedure time while maintaining detection accuracy
Solution Approach 2:
The system rushes through the map generation process by using efficient algorithms that compare map surfaces quickly and identify tenting artifacts in real-time during the procedure. The automated detection and correction mechanisms allow rapid processing of position information, minimizing the time added to the procedure while ensuring accurate map representation
Data Source
AI summary
An electro-anatomical map is generated from first position information that defines an initial map surface. Second position information is acquired and used to determine an updated map surface. A difference between the initial and updated map surfaces corresponds to a change in the map. A first tenting analysis volume is determined based on at least part of the updated map surface. Third position information is acquired and used to define a second tenting analysis volume. The change in the map is identified as potentially corresponding to tenting in accordance with whether the first tenting analysis volume fails to overlap a predetermined amount with the second tenting analysis volume.