Browsing by Author "Srivastava, Apoorva"
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Item A Bio-toolkit for Multi-Cardiac Abnormality Diagnosis using ECG Signal and Deep Learning(Computing in Cardiology) Kirodiwal, Akash; Srivastava, Apoorva; Dash, Ashutosh; Saha, Ayantika; Penaganti, Gopi Vamsi; Pratiher, Sawon; Alam, Sazedul; Patra, Amit; Ghosh, Nirmalya; Banerjee, NilanjanAutomated cardiac abnormality detection from an everexpanding number of electrocardiogram (ECG) records has been widely used to assist physicians in the clinical diagnosis of a variety of cardiovascular diseases. Over the last few years, deep learning (DL) architectures have achieved state-of-the-art performances in various biomedical applications. In this work, we propose a bio-toolkit based on the DL framework comprising of stacked convolutional and long short term memory neural network blocks for multi-label ECG signal classification. Our team participated under the name ”Cardio-Challengers” in the ”PhysioNet/Computing in Cardiology Challenge 2020” and obtained a challenge metric score of 0.337.Item A deep residual inception network with channel attention modules for multi-label cardiac abnormality detection from reduced-lead ECG(IOP, 2022-05-12) Srivastava, Apoorva; Pratiher, Sawon; Alam, Sazedul; Hari, Ajith; Banerjee, Nilanjan; Ghosh, Nirmalya; Patra, AmitObjective. Most arrhythmias due to cardiovascular diseases alter the electrical activity, resulting in morphological alterations in electrocardiogram (ECG) recordings. ECG acquisition is a low-cost, non-invasive process and is commonly used for continuous monitoring as a diagnostic tool for cardiac abnormality identification. Our objective is to diagnose twenty-nine cardiac abnormalities and sinus rhythm using varied lead ECG signals. Approach. This work proposes a deep residual inception network with channel attention mechanism (RINCA) for twenty-nine cardiac arrhythmia classification (CAC) along with normal ECG from multi-label ECG signal with different lead combinations. The RINCA architecture employing the Inception-based convolutional neural network backbone uses residual skip connections with the channel attention mechanism. The Inception model facilitates efficient computation and prevents overfitting while exploring deeper networks through dimensionality reduction and stacked 1-dimensional convolutions. The residual skip connections alleviate the vanishing gradient problem. The attention modules selectively leverage the temporally significant segments in a sequence and predominant channels for multi-lead ECG signals, contributing to the decision-making. Main results. Exhaustive experimental evaluation on the large-scale 'PhysioNet/Computing in Cardiology Challenge (2021)' dataset demonstrates RINCA efficacy. On the hidden test data set, RINCA achieves the challenge metric score of 0.55, 0.51, 0.53, 0.51, and 0.53 (ranked 2nd, 5th, 4th, 5th and 4th) for the twelve-lead, six-lead, four-lead, three-lead, and two-lead combination cases, respectively. Significance. The proposed RINCA model is more robust against varied sampling frequency, recording time, and data with heterogeneous demographics than the existing art. The explainability analysis shows RINCA potential in clinical interpretations.