Table 1 The data extracted from a number of studies conducted on patients infected with COVID-19: focusing on chest CT scanning parameters
Author name | No. of cases | Studied population | Tube voltage (kV) | Tube current (mA) | Tube current-time (mAs) | Pitch factor | CTDIvol (mGy) | DLP (mGy cm) |
|---|---|---|---|---|---|---|---|---|
Yoon et al. [23] | 9 | Median age, 54 years | 120 | – | 30 (low dose) to 60–120 (standard) | – | – | – |
Xu et al. [24] | 90 | Adults (18–86 years) | 120 | 210 | – | – | – | – |
Xia et al. [25] | 20 | Pediatrics (1 day–14 years 7 months) | 120 | 100 to 150 | – | 1 | – | – |
Wang et al. [26] | 114 | Adults (23–78) | 120 | 320 | – | 1–1.5 (for severe and critical cases) | – | – |
Li et al. [27] | – | – | 120 | – | 100–250 | 1–1.5 | – | – |
Liu et al. [28] | 59 | Pregnant women (n = 41) and non-pregnant adults (n = 14) (22–42 years) and pediatrics (2 months–9 years, n = 4) | 120 (pregnant women and non-pregnant adults) and 100 (pediatrics) | 10–300 (pregnant women), 120–380 (non-pregnant adults), and 30–100 (pediatrics) | – | 1.375:1 (pregnant women), 1.0875:1 or 1.375:1 (non-pregnant adults), and 0.969:1 (pediatrics) | – | 50–150 (pregnant adults) |
Shen et al. [29] | 44 | Mean age for the non-severe patient group, 52.17 ± 12.55 years and for the severe patient group, 57.25 ± 13.38 years | 120 | 30–140 | – | – | – | – |
Song et al. [12] | 51 | Adults (16–76 years) | 120 | 180–400 | – | 1.5 | – | – |
Xu et al. [30] | 50 | Pediatrics (n = 5) and adults (n = 45) (3–85 years) | 120 | 40–250 | – | 0.984:1 | – | – |
Albarello et al. [31] | 2 | Adults (66 and 67 years) | 120 | 250 | – | 1.375 | – | – |
Pan et al. [32] | 21 | Adults (25–63 years) | 120 | – | – | – | 8.4 ± 2.0 (5.2–12.6) | – |