Table 1 µCT automatically extracted parameters
µCT readouts | ||||
|---|---|---|---|---|
Name | Description | Unit | Formula | |
From P01 | \({N}_{P01}\) | Number of voxels at the end of inspiration phase (P01) | – | Counting of lung voxels in P01 |
\({V}_{P01}\) | Total lung volume at the end of inspiration phase (P01) | mm3 | \({N}_{P01}\cdot \mathrm{voxel size}\) | |
\({MLA}_{P01}\) | Mean lung attenuation at the end of inspiration phase (P01) | HU | \(\sum_{i=1}^{ {N}_{P01}}{\left(HU\right)}_{i}/{N}_{P01}\) | |
Air | Volume of air at the end of inspiration phase (P01) | mm3 | \(\frac{{\mathrm{V}}_{\mathrm{P}01}\cdot {\mathrm{MLA}}_{\mathrm{P}01}}{-1000(\mathrm{HU})}\) | |
From P02 | \({N}_{P02}\) | Number of voxels at the end of expiration phase (P02) | – | Counting of lung voxels in P02 |
\({V}_{P02}\) | Total lung volume at the end of expiration phase (P02) | mm3 | \({N}_{P02}\cdot \mathrm{voxel size}\) | |
\({MLA}_{P02}\) | Mean lung attenuation at the end of expiration phase (P02) | HU | \(\sum_{i=1}^{ {N}_{P02}}{\left(HU\right)}_{i}/{N}_{P02}\) | |
FRC | Functional residual capacity: Volume of air at the end of inspiration phase (P02) | mm3 | \(\frac{{\mathrm{V}}_{\mathrm{P}02}\cdot {\mathrm{MLA}}_{\mathrm{P}02}}{-1000(\mathrm{HU})}\) | |