CVAI Catalog

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ECG-FM

Base pretrained

University of Toronto / Vector Institute (Bo Wang Lab)

12-lead ECG

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ECG

Atrial fibrillation

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Arrhythmia

LV systolic dysfunction (LVSD)

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Cardiac Function & Hemodynamics

General Purpose / Multi-task

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General / Foundation

Binary classification

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Classification

Multi-label classification

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Classification

Transformer

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Transformer

PyTorch

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PyTorch

MIT

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Permissive

Open ECG foundation model with 90.9M parameters, built on a wav2vec 2.0-style Transformer and pretrained on 1.25-1.5 million ECGs using a hybrid contrastive-and-generative self-supervised objective. Base pretrained weights and MIMIC-IV-ECG-finetuned downstream checkpoints are both released. Developed on the fairseq_signals framework by the University of Toronto / Vector Institute's Wang lab.

memory Specifications

category

Architecture

Transformer

wav2vec 2.0-style transformer, pretrained with hybrid contrastive + generative (W2V+CMSC+RLM) self-supervised objective

code

Framework

PyTorch

calendar_month

Added to catalog

2026-07-10

gavel License

MIT

check_small Open source check_small Commercial use OK check_small Modifications allowed Attribution required No share-alike requirement

License for model weights only. Associated code may be licensed seperately, check code source for specific terms.

description Publication

database Training & evaluation data

public 161,352 subjects · USA

800,035 12-lead ECG-report pairs from 161,352 subjects at Beth Israel Deaconess Medical Center.

science Capabilities & performance

Atrial fibrillation

Binary classification Atrial fibrillation
0.996 AUROC MIMIC-IV-ECG downstream benchmark · internal

LVEF <=40%

Binary classification LV systolic dysfunction (LVSD)
0.929 AUROC MIMIC-IV-ECG downstream benchmark · internal

Multi-label classification

General Purpose / Multi-task