From: Agreement between low-dose and ultra-low-dose chest CT for the diagnosis of viral pneumonia imaging patterns during the COVID-19 pandemic
CTDIvol
DLP, Mean (± SD)
ED, Mean (± SD)
P value
Low-dose
1.15
36.5(± 5.2)
0.51(± 0.07)
< 0.001
Ultra-low-dose
0.34
9.9 (± 1.8)
0.14 (± 0.03)