From: Computing infection distributions and longitudinal evolution patterns in lung CT images
Studies | Major findings from the experimental results in our cohort of patients |
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Comparison of infection distributions of COVID-19 and CAP | The locations and sizes of COVID-19 infections are prevalently and significantly different from CAP in the lung COVID-19 mostly distributed on peripheral, posterior, and middle-lower pulmonary lobes CAP infections are smaller in size or number, and tend to be peripheral and close to the diaphragm |
Comparison of GGO and consolidation distributions between COVID-19 and CAP | In COVID-19, GGO infections hold a large percentage of infected regions and spread more widely than consolidation infections. The maximum probability of GGO and consolidation are 26.1% and 10.7%, respectively In CAP, these two types of infections were relatively mild, with the maximum probability of 7.9% in GGO and 5.1% in consolidation |
Comparison of onset stages in severe and critical COVID-19 cases | The two distribution maps are similar The region with significant difference was small (counting for 0.1% of the lung volume) The right lung, especially the right-lower lobe, has relative difference in the two distributions |
Time course of critical COVID-19 cases | GGO and consolidation changes are clearly associated with the disease time course The critical COVID-19 patients showed 4 subsequent patterns: progression, absorption, enlargement, and further absorption, with remarkable concurrent HU patterns for GGO and consolidations |