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. 2021 Nov 4;75:102299. doi: 10.1016/j.media.2021.102299

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Fig. 9 — Examples of the failure cases of the proposed model for the classification task. (A) The model misclassified a case of tuberculosis as COVID-19, as the location and distribution of the consolidative lesions resemble those of COVID-19 (lower and peripheral distribution of patch consolidations). (B) The model failed to diagnose a faint COVID-19 lesion in the right lower lobe of the patients, possibly due to the fact that the COVID-19 lesion was concealed by the opacity of breast tissue. (C) The model failed to diagnose in a mild COVID-19 case, showing the confusion by the support device. (D) A severe COVID-19 case was confused as other infection, in which an opacity was located at an unusual location for COVID-19 involvement (right middle lobe), but the model retained proper attention to the abnormal lesions.