dv.visualize_activations(model=cnn.model, layers=layers)

    # ----------------------------------- DicomFileManager -----------------------------------

    if test_dicom_file_manager:

        # ---------------- Visualize Dicom Files in a folder ----------------

        dfm = DicomFileManager()
        folder_path = 'covid19_repo/data/x_rays/covid_data/'

        fm = DicomFileManager()
        for file in os.listdir(folder_path):
            if file.endswith('.dcm'):
                fm.load_file(file_path=folder_path + file)
                im = fm.get_image_data()
                im.show(title=file)

        # ---------------- Save Dicom Files into a folder as images ----------------

        dfm = DicomFileManager()
        folder_path = 'covid19_repo/data/x_rays/covid_data/'
        save_path = 'covid19_repo/'
        img_extension = '.jpg'

        fm = DicomFileManager()
        for file in os.listdir(folder_path):
            if file.endswith('.dcm'):
                fm.load_file(file_path=folder_path + file)
                fm.save_pixels_as_image(save_path=save_path +
                                        file.replace('.dcm', img_extension))