From: Low-dose CT for quantitative analysis in acute respiratory distress syndrome
Measurement | 140 mAs | 60 mAs | 15 mAs | 7.5 mAs | P-value |
---|---|---|---|---|---|
CTDIvol (mGy) | 22.1 ± 0.0 | 9.2 ± 0.8 | 2.2 ± 0.3 | 1.1 ± 0.1 | <0.001 |
DLP (mGy/cm) | 870.5 ± 47.7 | 362.2 ± 45.2 | 96.5 ± 39.0 | 44.9 ± 6.4 | <0.001 |
E (mSv) | 17.8 ± 1.0 | 7.4 ± 0.9 | 2.0 ± 0.8 | 0.9 ± 0.1 | <0.001 |
Image noise (HU) | 10.0 ± 1.1 | 15.9 ± 3.5 | 37.5 ± 10.6 | 73.8 ± 17.5 | <0.001 |