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Fig. 5 | Egyptian Journal of Radiology and Nuclear Medicine

Fig. 5

From: COVID-19 clinico-radiological mismatch: a proposal for a novel combined morphologic/volumetric CT severity score with blinded validation

Fig. 5

Multiple patients proved with COVID-19, having variable bilateral mild or moderate/border-line lung involvement. a Multiple (> 3 in number) small (< 3 cm) bilateral sub-pleural and to lesser extent proximal pure GG nodules (around 5% of lung involvement) … COV [M1-S2] … CTSI [5/25] … Mild degree. b Bilateral lower lobar large pure ground-glass patches (around 36% of lung involvement) … COV [M1-S3] … CTSI [11/25] … Moderate degree. c Bilateral lower lobar sub-pleural pure ground-glass patches (> 3 cm in size but only 2 cm deep from the pleural lining) with peripheral “Atoll sign” (around 4% of lung involvement) … COV [M2-S1] … CTSI [3/25] … Mild degree. d Bilateral scattered small (< 3 cm) GGOs are seen; one of them is mixed with consolidative changes in the right lower lobe (around 3% of lung involvement) … COV [M3-S1] … CTSI [3/25] … Mild degree. e Right lower lobar curvilinear pattern of consolidations (> 3 cm in size but only 1 cm deep from the pleural lining), a small left lower lobar GGO is seen (around 3% of lung involvement) … COV [M4-S1] … CTSI [5/25] … Mild degree. f Bilateral multiple variably sized proximal and peripheral (> 3 cm) homogeneous consolidative patches (around 27% of lung volume) … COV [M4-S3] … CTSI [14/25] … Moderate degree

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