COVID-MobileXpert: On-Device COVID-19 Patient Triage and Follow-up using Chest X-rays

• URL: http://arxiv.org/abs/2004.03042v3
• Date: Mon, 7 Sep 2020 05:56:14 GMT
• Title: COVID-MobileXpert: On-Device COVID-19 Patient Triage and Follow-up using Chest X-rays
• Authors: Xin Li, Chengyin Li, Dongxiao Zhu
• Abstract summary: COVID-MobileXpert is a lightweight deep neural network (DNN) based mobile app that can use chest X-ray (CXR) for COVID-19 case screening and radiological trajectory prediction. We employ novel loss functions and training schemes for the MS network to learn the robust features.
• Score: 12.100371588940256
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: During the COVID-19 pandemic, there has been an emerging need for rapid, dedicated, and point-of-care COVID-19 patient disposition techniques to optimize resource utilization and clinical workflow. In view of this need, we present COVID-MobileXpert: a lightweight deep neural network (DNN) based mobile app that can use chest X-ray (CXR) for COVID-19 case screening and radiological trajectory prediction. We design and implement a novel three-player knowledge transfer and distillation (KTD) framework including a pre-trained attending physician (AP) network that extracts CXR imaging features from a large scale of lung disease CXR images, a fine-tuned resident fellow (RF) network that learns the essential CXR imaging features to discriminate COVID-19 from pneumonia and/or normal cases with a small amount of COVID-19 cases, and a trained lightweight medical student (MS) network to perform on-device COVID-19 patient triage and follow-up. To tackle the challenge of vastly similar and dominant fore- and background in medical images, we employ novel loss functions and training schemes for the MS network to learn the robust features. We demonstrate the significant potential of COVID-MobileXpert for rapid deployment via extensive experiments with diverse MS architecture and tuning parameter settings. The source codes for cloud and mobile based models are available from the following url: https://github.com/xinli0928/COVID-Xray.

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