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Detection of COVID-19 and its pulmonary stage using Bayesian hyperparameter optimization and deep feature selection

Nedim Muzoğlu1, Ahmet Mesrur Halefoğlu2, Muhammed Onur Avci1

  • 1Department of Biomedical Engineering, Faculty of Engineering Istanbul University-Cerrahpasa Istanbul Turkey.

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This study introduces an advanced artificial intelligence (AI) approach for accurate COVID-19 detection using computed tomography (CT) scans. The AI model achieved high accuracy in identifying COVID-19 and its lung manifestations.

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Bayesian optimizationH1N1 viral pneumoniabacterial pneumoniachest CT findingsfeature selectionocclusion sensitivity mapssine–cosine optimization

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Area of Science:

  • Medical Imaging
  • Artificial Intelligence
  • Radiology

Background:

  • The COVID-19 pandemic necessitated rapid diagnostic tools.
  • Artificial intelligence (AI) shows promise in supporting healthcare services for disease detection.

Purpose of the Study:

  • To develop a robust AI approach for detecting COVID-19 and its lung findings from CT images.
  • To compare the proposed method with existing techniques for improved diagnostic accuracy.

Main Methods:

  • Utilized pre-trained ShuffleNet, GoogLeNet, and MobileNetV2 models on two distinct datasets.
  • Employed Sine-Cosine optimization for feature selection and Bayesian optimization for Support Vector Machines (SVM) hyperparameter tuning.
  • Visualized results using Occlusion Sensitivity Maps and compared with Gradient-weighted Class Activation Mapping (Grad-CAM).

Main Results:

  • Achieved high overall accuracy: 99.46% on the first dataset (COVID-19, H1N1, bacterial pneumonia, healthy) and 99.82% on the second (lung imaging features).
  • The proposed AI approach demonstrated superior performance in differentiating COVID-19 from other pneumonias.
  • Successfully identified various stages of COVID-19 lung involvement.

Conclusions:

  • The developed AI method offers a powerful and accurate solution for COVID-19 detection from CT scans.
  • This approach is effective in classifying multiclass viral pneumonia and staging lung involvement in COVID-19 patients.
  • The study highlights the potential of AI in enhancing diagnostic capabilities for infectious respiratory diseases.