Cardiovascular Navigation Heart Motion Characterization
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Solution Overview
Problem
Current cardiovascular navigation systems face challenges in accurately characterizing complex motion patterns of the heart, particularly in determining mechanical activation points due to multiple displacement peaks, which complicates the evaluation of optimal lead placement in the left ventricular region.
Innovation Solution
A method and system that obtain point-specific motion data for multiple map points on the heart, calculate mechanical activation times, identify and modify these times based on neighboring points, and assign clarity scores to enhance the accuracy of mechanical activation time determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If mechanical activation time is determined from sensor information at various endocardial and epicardial locations, then motion characterization of the heart is achieved, but the complex pattern with multiple displacement apexes or peaks makes determination of the mechanical activation point difficult
Solution Approach 1:
The patent segments the complex motion data by identifying and analyzing individual displacement peaks separately. The method divides the continuous motion signal into discrete peak events, allowing each peak to be characterized independently through parameters such as amplitude, width, and area under the curve, thereby making the complex pattern manageable and analyzable
Solution Approach 2:
The patent applies partial action by focusing only on the most significant displacement peaks rather than attempting to analyze every minor fluctuation in the motion data. By setting threshold criteria for peak identification and selecting only those peaks that meet specific amplitude and temporal criteria, the method extracts the essential mechanical activation information while filtering out noise and less relevant movements
Data Source
AI summary
A method and system are provided for characterizing motion data. The method and system obtain point specific (PS) motion data for a plurality of map points. The PS motion data indicates an amount of motion that occurred at the corresponding map point on a wall of the heart during at least one cardiac cycle. The method and system, calculate mechanical activation times (MAT) for the map points, identifying a group of neighbor map points for a current map point, and modifying the MAT corresponding to the current map point based on the MATs corresponding to at least a portion of the group of neighboring map points. Further, the method and system repeat the identifying and modifying operations for at least a subset of the map points.