CVAI Catalog

·

View Catalog

MERL-ECHO

University of Hong Kong / Imperial College London

12-lead ECG

Filter catalog by Modality:
ECG

Clinical text

Filter catalog by Modality:
Text & EHR

Multimodal

Filter catalog by Modality:
Multimodal

LV systolic dysfunction (LVSD)

Filter catalog by Disease / Trait:
Cardiac Function & Hemodynamics

Valvular disease

Filter catalog by Disease / Trait:
Structural Heart & Cardiomyopathy

Structural heart disease (composite)

Filter catalog by Disease / Trait:
Structural Heart & Cardiomyopathy

Binary classification

Filter catalog by Task Type:
Classification

Multi-label classification

Filter catalog by Task Type:
Classification

Hybrid

Filter catalog by Architecture:
Hybrid / Multi-branch

PyTorch

Filter catalog by Framework:
PyTorch

code View code

Model weights not public. Contact creators for more information.

CLIP-style model that aligns 12-lead ECG signals with free-text echocardiography reports for zero-shot detection of structural heart disease directly from an ECG. Extends the MERL framework, and was trained on 45,016 paired ECG-echo reports from two Hong Kong hospitals, with external validation on the public EchoNext dataset from Columbia University. Developed by researchers at the University of Hong Kong and Imperial College London; described in a 2025 medRxiv preprint.

memory Specifications

category

Architecture

Hybrid

CLIP-style contrastive architecture aligning 12-lead ECG signals with free-text echocardiography reports, extending the MERL framework

code

Framework

PyTorch

calendar_month

Added to catalog

2026-07-10

description Publication

database Training & evaluation data

public 36,286 subjects · USA · 2008-2022

100,000 de-identified 12-lead ECGs from 36,286 adult patients at Columbia University Irving Medical Center, each paired with echocardiogram-derived structural-heart-disease labels from a TTE within 1 year of the ECG.

science Capabilities & performance

LV systolic dysfunction (zero-shot)

Binary classification LV systolic dysfunction (LVSD)
0.76 AUROC EchoNext (PhysioNet) · external

Aortic stenosis (zero-shot)

Binary classification Valvular disease
0.76 AUROC EchoNext (PhysioNet) · external

Average across 6 SHDs (zero-shot)

Multi-label classification Structural heart disease (composite)
0.72 AUROC EchoNext (PhysioNet) · external