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November 18, 2025Journal of Cardiovascular Electrophysiology

CardioMat digital twin model outperforms conventional CMR by predicting deceleration zones with ~17-fold higher odds.

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Why the study?

High density electroanatomical mapping is limited by its two-dimensional nature and complexity, while imaging provides anatomical characterization without functional information.

Does the CardioMat digital twin model accurately predict functional substrate localization compared to high-density EAM in patients undergoing VT ablation?

Comparison

CardioMat-derived DZs vs EAM-derived DZs and CMR-based HTCs and scar areas

Design

Retrospective validation study

Key result

The CardioMat digital twin model accurately predicted electroanatomical mapping-derived deceleration zones (OR 17.4; 95% CI 6.9-43.8; p>0.001), outperforming conventional CMR-based assessment.

Authors

MPM ParolloNBNiccolò BiasiMTMarco Torre

Discussion

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Overview

Supports noninvasive VT substrate mapping; hypothesis-generating and requires prospective validation before clinical adoption.

Study Design

Type

Observational (n=15)

Structured PICO

Does the CardioMat digital twin model accurately predict functional substrate localization compared to high-density EAM in patients undergoing VT ablation?

P
Population
15 patients with ischemic or nonischemic cardiomyopathy undergoing scar-related ventricular tachycardia (VT) ablation
I
Intervention
CardioMat digital twin model for noninvasive three-dimensional functional substrate prediction
C
Comparator
High-density electroanatomical mapping (EAM) derived deceleration zones (DZs) and cardiac magnetic resonance (CMR) based heterogeneous tissue channels (HTCs) and scar areas
O
Outcome
Diagnostic accuracy (sensitivity, specificity, PPV, NPV, accuracy) of CardioMat-derived DZs for predicting EAM-DZ localizationsurrogate

Main Result

Effect estimate: OR 17.4 (95% CI 6.9-43.8)

p-value: p=> 0.001

The CardioMat digital twin model accurately predicts functional substrate localization in scar-related VT, outperforming conventional CMR-based assessment and offering a potential noninvasive alternative to high-density EAM.

Limitations

  • Retrospective design
  • Requires prospective multicenter validation
  • Small sample size (n=15)

Cite This Study

Parollo et al. (2025) conducted an observational in Scar-related ventricular tachycardia (n=15). CardioMat digital twin model vs. CMR scar and heterogeneous tissue channels (HTCs) was evaluated on Prediction of EAM-DZ localization (OR 17.4, 95% CI 6.9-43.8, p=> 0.001). The CardioMat digital twin model accurately predicted electroanatomical mapping-derived deceleration zones (OR 17.4; 95% CI 6.9-43.8; p>0.001), outperforming conventional CMR-based assessment.

synapsesocial.com/papers/6a0ef364a14f152feafa100dhttps://doi.org/10.1111/jce.70184
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Validation of a Digital Twin Model for Three‐Dimensional Noninvasive Functional Substrate Prediction in Scar Related Ventricular Tachycardia2025
  2. 2Clinical validation of a novel digital twin framework for ventricular functional substrate simulation in post-infarction patients2024
  3. 3Heart Digital Twins Predict Features of Invasive Reentrant Circuits and Ablation Lesions in Scar-Dependent Ventricular Tachycardia2025 · 13 citations
  4. 4Photon-counting CT characterization of arrhythmogenic substrate in VT ablation2026
  5. 5Functional substrate versus anatomical ablation approaches in structural ventricular tachycardia, in-silico comparison with a novel digital twin framework2026