A morphology based deep learning model for atrial fibrillation detection using single cycle electrocardiographic samples.
Int J Cardiol
; 316: 130-136, 2020 10 01.
Article
em En
| MEDLINE
| ID: mdl-32315684
ABSTRACT
BACKGROUND:
Deep learning (DL) has shown promising results in improving atrial fibrillation (AF) detection algorithms. However, these models are often criticized because of their "black box" nature.AIM:
To develop a morphology based DL model to discriminate AF from sinus rhythm (SR), and to visualize which parts of the ECG are used by the model to derive to the right classification.METHODS:
We pre-processed raw data of 1469 ECGs in AF or SR, of patients with a history AF. Input data was generated by normalizing all single cycles (SC) of one ECG lead to SC-ECG samples by 1) centralizing the R wave or 2) scaling from R-to- R wave. Different DL models were trained by splitting the data in a training, validation and test set. By using a DL based heat mapping technique we visualized those areas of the ECG used by the classifier to come to the correct classification.RESULTS:
The DL model with the best performance was a feedforward neural network trained by SC-ECG samples on a R-to-R wave basis of lead II, resulting in an accuracy of 0.96 and F1-score of 0.94. The onset of the QRS complex proved to be the most relevant area for the model to discriminate AF from SR.CONCLUSION:
The morphology based DL model developed in this study was able to discriminate AF from SR with a very high accuracy. DL model visualization may help clinicians gain insights into which (unrecognized) ECG features are most sensitive to discriminate AF from SR.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Fibrilação Atrial
/
Aprendizado Profundo
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article