Electrophysiology Catheter Signal Quality Mapping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current electrophysiological mapping systems lack a quick and visual confirmation of electrogram quality, which is crucial for improving the quality and density of cardiac diagnostic and therapeutic procedures.
Innovation Solution
A system that determines signal quality by using information on proximal stability, including distance, contact force, and velocity of the electrophysiology catheter, and temporal stability of the signal, to compute a signal quality score and generate a graphical representation, enabling the creation of a signal quality map.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple intracardiac electrogram signals are collected simultaneously to increase map quality and density, then the quality and density of electrophysiology maps are improved, but the ability to quickly and visually confirm signal quality is lost
Solution Approach 1:
The system assigns different colors to represent different signal quality levels in the electrophysiology map. High-quality signals are displayed in one color (e.g., green), while lower-quality signals are displayed in another color (e.g., red), enabling practitioners to quickly visually assess signal quality across multiple measurement points without manually evaluating each signal.
Solution Approach 2:
The system introduces an intermediate visual representation layer between the raw multi-channel electrogram signals and the practitioner's assessment. This intermediary layer processes the multiple signals and presents them as a simplified color-coded map, making it easy to visually confirm signal quality while maintaining the ability to collect multiple signals simultaneously.
2Measurement precision
If signal quality assessment is performed manually for each electrogram, then accurate quality evaluation is achieved, but time consumption increases
Solution Approach 1:
The system automatically performs signal quality assessment for multiple electrogram channels simultaneously without requiring manual evaluation by the practitioner. The processing system autonomously analyzes each signal's morphology, amplitude, and other characteristics to determine quality levels, and automatically generates the color-coded representation, eliminating time-consuming manual assessment while maintaining accurate quality evaluation.
Solution Approach 2:
The system performs preliminary automatic signal quality assessment as data is being collected, rather than requiring post-collection manual review. By pre-processing and evaluating signal quality in real-time during the mapping procedure, the system saves significant time while ensuring accurate quality assessment before final map generation.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The signal quality of an electrophysiological signal can be determined from information regarding proximal stability of an electrophysiology catheter at the time the signal is acquired and temporal stability of the electrophysiological signal. The proximal stability information can include a distance between the electrophysiology catheter and an anatomical surface, a velocity of the electrophysiology catheter, and/or contact force between the electrophysiology catheter and the anatomical surface. Graphical representations of signal quality scores can be output to a display in order to enable visualization thereof by a practitioner.