Arrhythmias & electrophysiology
Comparison of combined anatomic and functional modeling with purely anatomic assessment in scar-dependent ventricular tachycardia
Authors' conclusion
The addition of functional data improves detection of the critical substrate above purely AA in scar-dependent VT. DTs are a potentially useful aid in VT ablation.
Study context
- Population
- Patients with scar-dependent ventricular tachycardia (VT) planned for catheter ablation who underwent contrast-enhanced cardiac magnetic resonance imaging (MRI)
- Participants
- 18 patients
- Comparison
- Detection of scar and critical substrate was compared between anatomic assessment (AA) and DT.
- Outcome
- Scar identification
Main finding
As reported in the abstract
- Scar identification was similar between AA and DT
Further findings
Total area predicted for ablation · similar
P = 0.96
| Outcome | DT | AA | P value | |
|---|---|---|---|---|
| Sensitivity for detection of abnormal electrogramsGreater with DT than AA | 51.4% ± 17.6% | 25.3% ± 25.4% | P = 0.002 | |
| Sensitivity of detection of deceleration zones, mid-diastolic potentials, and sites of VT termination with ablation | Not reported in the abstract | 50.0% | DT: not reported in the abstract |
- Sensitivity of detection of deceleration zones, mid-diastolic potentials, and sites of VT termination with ablation: counts refer to mid-diastolic potentials correctly identified
- Sensitivity of detection of deceleration zones, mid-diastolic potentials, and sites of VT termination with ablation: Sensitivity of detection of mid-diastolic potentials: DT 13 of 16 (81.3%) vs AA 8 of 16 (50.0%)
Sensitivity of detection of deceleration zones, mid-diastolic potentials, and sites of VT termination with ablation
- Higher with DT than AA
Parts of this Brief are withheld: the automatic checks could not confirm them against the abstract.
Original publication
Comparison of combined anatomic and functional modeling with purely anatomic assessment in scar-dependent ventricular tachycardia. Heart Rhythm. Published 7 January 2026. doi:10.
Summarised from the published abstract; every number is checked against it