COVID-19 pneumonia: A review of typical radiological characteristics

Table 1 Adapted from Chen et al[21] chest X-ray sensitivity in coronavirus disease 2019 pneumonia

Ref.	Cases	Initial RT-PCR	RT-PCR	Abnormal	Bilateral
Wong et al[13], 2020	64	Positive 58/64 (91%); Negative 6/64 (9%)	64 positive/0 negative	21/64 (33%)	32/64 (50%)
Chen et al[21], 2020	99	—	99 positive/0 negative	99/99 (100%)	74/99 (75%)
Kim et al[15], 2020	28	—	28 positive/ 0 negative	13/28 (46.4%)	6 (21.4%)
Ng et al[14], 2020	21	—	21 positive/0 negative	3/5 (60%)	2/5 (40%)

RT-PCR: Reverse transcription-polymerase chain reaction.