Magnetocardiography for Exploratory Risk Stratification in Patients With Three-Vessel Coronary Artery Disease: A
Ziyu An1, Shipan Wang2, Min Zhang1
1Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China, ccmu.edu.cn.
Cardiovascular Therapeutics
|July 17, 2026
Summary
Magnetocardiography (MCG) shows promise in predicting major adverse cardiovascular and cerebrovascular events (MACCE) in three-vessel coronary artery disease (3V-CAD) patients post-revascularization, offering complementary electrophysiological insights beyond anatomical scores.
Area of Science:
- Cardiology
- Medical Imaging
- Electrophysiology
Background:
- Patients with three-vessel coronary artery disease (3V-CAD) exhibit varied risks for major adverse cardiovascular and cerebrovascular events (MACCE) following revascularization.
- Magnetocardiography (MCG), a non-contact, radiation-free imaging method, may detect electrophysiological abnormalities missed by traditional anatomical risk assessments.
Purpose of the Study:
- To investigate the exploratory prognostic value of MCG-derived parameters in patients diagnosed with 3V-CAD.
Main Methods:
- A single-center prospective cohort study involving 544 patients with 3V-CAD who underwent coronary revascularization.
- Pre-revascularization MCG recordings were acquired using a 36-channel optically pumped magnetometer system.
- Major adverse cardiovascular and cerebrovascular events (MACCE) were defined as the primary endpoint, including cardiac death, stroke, myocardial infarction, or unplanned revascularization. Cox regression models incorporated clinical variables, SYNTAX score, and an MCG composite variable, with performance evaluated via discrimination, calibration, decision curve analysis, and bootstrap validation.
Main Results:
- Over a median follow-up of 725 days, 37 patients (6.8%) experienced MACCE.
- Both the SYNTAX score and the MCG composite variable were independently associated with MACCE after adjusting for clinical variables and the other score.
- While adding MCG to a model with clinical variables and SYNTAX score increased discrimination (C-index from 0.682 to 0.727), this improvement was not statistically significant (p=0.17). Bootstrap validation yielded an optimism-corrected C-index of 0.672.
Conclusions:
- MCG-derived parameters demonstrated an association with MACCE, suggesting potential for complementary electrophysiological information in risk stratification for 3V-CAD patients post-revascularization.
- Larger multicenter studies with external validation are necessary to confirm the supplementary prognostic utility of MCG.
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