Table 1 Density values of the ground-glass opacities and visually unaffected tissue and their difference from 22 clinical images
From: A phantom study to optimise the automatic tube current modulation for chest CT in COVID-19
Group | Mean | Standard deviation | 95% confidence interval | p value |
|---|---|---|---|---|
Ground-glass opacity regions | −616.6 | 99.0 | −662.9, −570.2 | < 0.001 |
Visually unaffected tissue | −917.0 | 37.5 | −934.5, −899.5 | |
Difference | −300.5 | – | −349.2, −251.7 |