anyECG-chat: A Generalist ECG-MLLM for Flexible ECG Input and Multi-Task Understanding

• URL: http://arxiv.org/abs/2506.00942v1
• Date: Sun, 01 Jun 2025 10:17:13 GMT
• Title: anyECG-chat: A Generalist ECG-MLLM for Flexible ECG Input and Multi-Task Understanding
• Authors: Haitao Li, Ziyu Li, Yiheng Mao, Ziyi Liu, Zhoujian Sun, Zhengxing Huang,
• Abstract summary: multimodal large language models (MLLMs) have sparked interest in their application to electrocardiogram (ECG) analysis.<n>Existing ECG-focused MLLMs primarily focus on report generation tasks, often limited to single 12-lead, short-duration (10s) ECG inputs.<n>We propose the anyECG-chat model, which supports dynamic-length ECG inputs and multiple ECG inputs.
• Score: 20.290531515033518
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: The advent of multimodal large language models (MLLMs) has sparked interest in their application to electrocardiogram (ECG) analysis. However, existing ECG-focused MLLMs primarily focus on report generation tasks, often limited to single 12-lead, short-duration (10s) ECG inputs, thereby underutilizing the potential of MLLMs. To this end, we aim to develop a MLLM for ECG analysis that supports a broader range of tasks and more flexible ECG inputs. However, existing ECG-QA datasets are often monotonous. To address this gap, we first constructed the anyECG dataset, which encompasses a wide variety of tasks, including report generation, abnormal waveform localization, and open-ended question answering. In addition to standard hospital ECGs, we introduced long-duration reduced-lead ECGs for home environments and multiple ECG comparison scenarios commonly encountered in clinical practice. Furthermore, we propose the anyECG-chat model, which supports dynamic-length ECG inputs and multiple ECG inputs. We trained the model using a three-stage curriculum training recipe with the anyECG dataset. A comprehensive evaluation was conducted, demonstrating that anyECG-chat is capable of supporting various practical application scenarios, including not only common report generation tasks but also abnormal waveform localization for long-duration reduced-lead ECGs in home environments and comprehensive comparative analysis of multiple ECGs.

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