Fig. 5.

Two cases in which volumetric percentage was inconsistency with density at absorption stage. a–d A 53-year-old man who was diagnosed as common to severe. Volumetric percentage reached to peak at day 20 and then absorbed. Although extent of infection did not decrease, but density decreased representing lesions were dissipating, and patient was recovering. e Another 65-year-old patient showed the same discrepancy during absorption period. Window level and window width of CT images were the same for each patient, respectively