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August 16, 2026Nature Cardiovascular ResearchOpen Access

Uncertainty-aware computational modeling predicts clinical VT circuits with ~0.85 ECG correlation in ischemic patients.

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Why the study?

Concerns regarding practical implementation and prediction robustness due to imaging uncertainty have hindered clinical translation of personalized digital twin guidance for VT catheter ablation.

Does a computational model incorporating scar uncertainty improve the identification of VT ablation targets in patients with structural heart disease?

Population

Ischemic ablation patients

Comparison

Simulated VT circuit ECG fingerprints vs clinical recordings

Design

Computational modeling and validation study

Key result

An uncertainty-aware computational modeling framework successfully predicted clinical ventricular tachycardia circuits, achieving a mean ECG correlation coefficient of 0.845 with clinical recordings in ischemic patients.

Authors

AQAbdul Mateen QadriURUrsula RohrerFCFernando O. Campos

Discussion

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Overview

New framework improves robustness of digital twin VT models; leaves open whether it improves ablation outcomes in practice.

Key Points

  • To develop a near-real-time computational modeling framework that accounts for imaging and anatomical uncertainty to improve catheter ablation guidance in ventricular tachycardia.
  • Constructed personalized digital twin models from clinical imaging data while incorporating variations and uncertainty in reconstructed scar anatomy.
  • Simulated ventricular tachycardia circuits and compared simulated ECG fingerprint signatures against clinical recordings from ischemic ablation patients.
  • Integrated anatomical circuit data across multiple model instances into a composite ablation target heatmap.
  • Simulated ECG fingerprint signatures demonstrated close qualitative agreement with clinical recordings in ischemic ablation patients.
  • Accounting for variations in reconstructed scar anatomy successfully identified optimal matching simulated tachycardia circuits across diverse model instances.
  • Integrated multi-instance circuit data into actionable ablation target heatmaps for near-real-time clinical decision support.

Study Design

Type

Observational (n=14)

Multicenter

No

Structured PICO

Does a computational model incorporating scar uncertainty improve the identification of VT ablation targets in patients with structural heart disease?

P
Population
14 patients with structural heart disease (11 ischemic, 3 non-ischemic) undergoing clinically indicated catheter ablation for ventricular tachycardia.
I
Intervention
Virtual Induction and Treatment of Arrhythmias (VITA) computational framework generating a Simulated Ablation Target HEat (SATHe) Map by incorporating uncertainty in CT-derived scar reconstruction across multiple model instances.
C
Comparator
Clinical 12-lead VT recordings, local activation time (LAT) mapping, pace mapping (PaSo Maps), and clinical ablation lesions.
O
Outcome
Correlation coefficient (CC) between simulated 12-lead ECG signatures of VT circuits and clinical VT recordings.surrogate

Incorporating uncertainty in CT-derived scar reconstruction into personalized computational models allows for near-real-time, accurate prediction of VT ablation targets that closely match clinical ECGs and mapping data.

Limitations

  • Intra-procedural registration of the imaging-derived model with EAM geometry is challenging
  • Potential ECG electrode localization errors
  • Simplified electrophysiological parameterization
  • Inaccuracies in scar representation
  • Left ventricular wall thickness may be an inadequate scar surrogate in non-ischemic cases or ischemic cases with minimal wall thinning

Cite This Study

Qadri et al. (2026) conducted an observational in Ventricular tachycardia (n=14). Uncertainty-aware computational modeling (SATHe Map) vs. Clinical electro-anatomical mapping and ECG recordings was evaluated on Correlation coefficient between simulated and clinical 12-lead ECG signatures of VT circuits. An uncertainty-aware computational modeling framework successfully predicted clinical ventricular tachycardia circuits, achieving a mean ECG correlation coefficient of 0.845 with clinical recordings in ischemic patients.

synapsesocial.com/papers/6a817a4cf2fb91fc834ae098https://doi.org/10.1038/s44161-026-00856-w
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Also Consider

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

  1. 1Incorporating uncertainty into digital twins can improve ablation planning for ventricular tachycardia2026
  2. 2Fast personalized electrophysiological models from computed tomography images for ventricular tachycardia ablation planning2018 · 48 citations
  3. 3High-fidelity postmyocardial infarction ventricular tachycardia simulation for intraprocedure ablation guidance2026
  4. 4A data-driven computational methodology for assessing ventricular ablation procedures2026
  5. 5Sensitivity of Ablation Targets Prediction to Electrophysiological Parameter Variability in Image-Based Computational Models of Ventricular Tachycardia in Post-infarction Patients2019 · 41 citations