Noninvasive Epicardial and Endocardial Electrocardiographic Imaging of Scar:Related Ventricular Tachycardia
Bibliographic record
Abstract
An effective treatment for scar-related ventricular tachycardia (VT) is to interrupt the circuit by catheter ablation.If activation sequence and entrainment mapping can be performed during sustained VT, the exit and isthmus of the circuit can often be identified.However, with invasive catheter mapping, only monomorphic VT that is hemodynamically stable can be mapped in this manner.A noninvasive approach to fast mapping of unstable VTs can potentially allow an improved identification of critical ablation sites.In this pilot study, noninvasive ECG-imaging were carried out on patients with unstable scar-related VT.The reconstructed reentry circuits correctly revealed both epicardial and endocardial origins of activation, consistent with locations of exit sites found during ablation procedures.The results also indicated that some reentry circuits involve both epicardial and endocardial layers, and can only be properly interpreted by mapping both layers.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".