Artificial Intelligence in Electrocardiology for Arrhythmia Diagnosis

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  • Mukai Yasushi
    Division of Cardiology, Fukuoka Red-Cross Hospital Department of Cardiovascular Medicine, Kyushu University Hospital
  • Tohyama Takeshi
    Center for Clinical and Translational Research, Kyushu University Hospital
  • Sakamoto Kazuo
    Department of Cardiovascular Medicine, Kyushu University Hospital

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Other Title
  • Development of a Visualization Deep Learning Model for Classifying Origins of Ventricular Arrhythmias

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Description

<p>Background: Several algorithms have been proposed for differentiating the right and left outflow tracts (RVOT/LVOT) arrhythmia origins from 12-lead electrocardiograms (ECGs); however, the procedure is complicated. A deep learning (DL) model, a form of artificial intelligence, can directly use ECGs and depict the importance of the leads and waveforms. This study aimed to create a visualized DL model that could classify arrhythmia origins more accurately.</p><p>Methods and Results: This study enrolled 80 patients who underwent catheter ablation. A convolutional neural network-based model that could classify arrhythmia origins with 12-lead ECGs and visualize the leads that contributed to the diagnosis using a gradient-weighted class activation mapping method was developed. The average prediction results of the origins by the DL model were 89.4% (88.2–90.6) for accuracy and 95.2% (94.3–96.2) for recall, which were significantly better than when a conventional algorithm is used. The ratio of the contribution to the prediction differed between RVOT and LVOT origins. Although leads V1 to V3 and the limb leads had a focused balance in the LVOT group, the contribution ratio of leads aVR, aVL, and aVF was higher in the RVOT group.</p><p>Conclusions: This study diagnosed the arrhythmia origins more accurately than the conventional algorithm, and clarified which part of the 12-lead waveforms contributed to the diagnosis. The visualized DL model was convincing and may play a role in understanding the pathogenesis of arrhythmias.</p>

Journal

  • Circulation Journal

    Circulation Journal 86 (8), 1281-1282, 2022-07-25

    The Japanese Circulation Society

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