Abstract
The ongoing COVID-19 pandemic caused an unprecedented overburning of healthcare systems and still represents a global health issue with the emergence of COVID-19 variants. The relevance of mass testing for COVID-19 in the find-test-trace-isolate-support strategy suggested by the World Health Organization (WHO) is imperative to reduce COVID-19 transmission. Although real-time polymerase chain reaction (RT-PCR) is considered a reference standard for COVID-19 detection, it is an expensive, lengthened, and laborious process, and problems in RNA extraction can reduce the sensitivity. In this context, the Raman spectroscopy analysis in biofluids is a label-free method performing a suitable cost-benefit application for COVID-19 detection. We propose a Convolutional Neural Network (CNN) architecture that processes spectra images generated by the Raman spectrum and returns the COVID-19 diagnosis of the spectrum sample. The predictive performance of the CNN was compared against several other algorithms widely adopted in the literature. The CNN architecture discriminates COVID-19 with Raman spectroscopy of blood samples with 96.8% accuracy, 95.5% sensitivity, and 98.2% of specificity, representing the best results as well as a promising alternative to distinguish samples. Moreover, we also present a model explanation analysis that contributes to clarifying the salient features taken into account by our CNN.
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Acknowledgment
Authors thank the financial support given by Google (through the 2020 and 2021 Google Latin America Research Awards), Minas Gerais Research Foundation - FAPEMIG (grants number APQ-00410-21), Brazilian National Council for Scientific and Technological Development - CNPq (grants number 402196/2021-0 and 408216/2022-0), and National Institute of Science and Technology in Theranostics and Nanobiotechnology - INCT-Teranano (grant number CNPq-465669/2014-0). RS-S also thanks the CNPq for the productivity fellowship. We also thank NVIDIA Corporation by the donation of a Titan V GPU used in this research.
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Santos, A.P., Filho, A.C.M., Sabino-Silva, R., Carneiro, M.G. (2023). Convolutional Neural Networks for the Molecular Detection of COVID-19. In: Naldi, M.C., Bianchi, R.A.C. (eds) Intelligent Systems. BRACIS 2023. Lecture Notes in Computer Science(), vol 14196. Springer, Cham. https://doi.org/10.1007/978-3-031-45389-2_4
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DOI: https://doi.org/10.1007/978-3-031-45389-2_4
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