Co-Located MCG-ECG Electrode Tracking for Motion Artifact Correction
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Solution Overview
Problem
Current MCG systems face challenges in accurately tracking patient position during measurements due to patient movement, leading to degraded signal quality and potential false diagnoses, while ECG systems lack effective methods for electrode localization, resulting in inconsistent data interpretation.
Innovation Solution
A hybrid MCG-ECG system that uses electromagnetic transmitters on ECG electrodes to track patient position and electrode locations, enabling continuous localization and improved data denoising through joint MCG and ECG data analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If MCG measurements are performed without continuous position tracking, then device complexity is reduced, but measurement precision deteriorates due to patient movement artifacts
Solution Approach 1:
The patent combines MCG and ECG systems into a hybrid system where ECG electrodes serve dual purposes: recording cardiac electrical signals and tracking electrode position through electromagnetic transmitters. This merging allows continuous position tracking without adding separate tracking hardware, thus improving measurement precision while controlling device complexity.
Solution Approach 2:
The ECG electrodes are given multiple functions: they not only detect cardiac electrical activity but also contain electromagnetic transmitters that continuously track their position on the patient's body. This multi-functionality eliminates the need for separate position tracking devices, resolving the contradiction between system complexity and measurement precision.
2Ease of operation
If ECG electrodes are manually positioned without automated localization, then ease of operation is improved, but measurement precision deteriorates due to inaccurate electrode location data
Solution Approach 1:
The electromagnetic transmitters embedded in ECG electrodes automatically track their own position on the patient's body throughout the measurement process. The system self-localizes electrode positions without requiring manual marking or external tracking devices, maintaining ease of operation while achieving high measurement precision through continuous automated localization.
3Productivity
If MCG data is collected without position correction, then data acquisition speed is improved, but measurement precision deteriorates due to movement artifacts
Solution Approach 1:
The system continuously monitors electrode position through electromagnetic transmitters and uses this position information as feedback to correct MCG data artifacts caused by patient movement. The position data is processed in real-time to dynamically adjust and correct MCG measurements, maintaining both fast data acquisition and high measurement precision through continuous feedback-based correction.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances MCG data quality by correcting artifacts from patient movement and localizing ECG electrodes, allowing for more accurate cardiac activity source localization and reduced noise, facilitating efficient and reliable diagnostic insights.
Implementation Method 1
electromagnetic transmitters on ECG electrodes to track patient position
Implementation Method 2
magnetic field data from the heart is recorded at several locations in space
Data Source
AI summary
A system includes a magnetocardiography (MCG) subsystem having a plurality of magnetometers. The system measures, via the MCG subsystem using the plurality of magnetometers, MCG data comprising biomagnetic field signals from a human subject. the system receives, from one or more ECG electrodes that are physically coupled to the human subject, ECG data comprising cardiac electrical activity of a heart of the human subject. The system determines location information of the one or more electrodes that are mounted on the human subject. In some embodiments, the system enhances the measured MCG data and/or the received ECG data according to determined location information of the one or more electrodes.