Table 2 CT features of COVID-19 patients with two consecutive negative RT-PCR tests after treatment.

From: CT features of COVID-19 patients with two consecutive negative RT-PCR tests after treatment

FeatureModerate group
n = 39
Severe/critical group
n = 7
P value
Number
Unique3 (8%)0 (%)
Multiple36 (92%)7 (100%)1.0
Distribution
Peripheral33 (85%)2 (29%)0.005
Peripheral involving central6 (15%)5 (71%)0.005
Lobes involved
Single lobe9 (23%)0 (0%)
2–4 lobes13 (33%)0 (0%)
5 lobes17 (44%)7 (100%)0.01
Density
Ground glass opacity38 (97%)7 (100%)1.0
Mixed ground glass opacity16 (41%)7 (100%)0.009
Consolidation4 (10%)4 (57%)0.012
Shape
Circular18 (46%)3 (43%)1.0
Fan-shaped19 (49%)7 (100%)0.014
Irregular34 (87%)7 (100%)1.0
Pulmonary fibrosis22 (56%)5 (71%)0.682
Pulmonary interstitium thickening28 (72%)7 (100%)0.171
Linear5 (13%)1 (14%)1.0
Reticular23 (59%)6 (86%)0.043
Other findings
Air bronchogram1 (3%)4 (57%)0.003
Vascular enlargement30 (77%)7 (100%)0.316
Bronchial wall thickening3 (8%)2 (29%)0.160
Bronchiectasis5 (13%)3 (43%)0.089
Pleural thickening19 (49%)6 (86%)0.106
Pleural adhesion12 (31%)5 (71%)0.083
Pleural effusion1 (3%)3 (43%)0.009
Total CT score
0–529 (74%)0 (0%)
6–108 (21%)2 (29%)0.636
11–150 (%)1 (14%)
16–202 (5%)4 (57%)0.003