Table 1.
Imaging parameter | Spatial resolution | Contrast | Noise | Artefacts | Radiation dose |
---|---|---|---|---|---|
FOV size ↑a | – | ↓ | ↑ | ↑ | ↑ |
kV ↑ | – | ↓ | ↓ | –b | ↑ |
mAs ↑ | – | – | ↓ | – | ↑ |
Voxel size ↑ | ↓ | – | ↓ | – | – |
↓, decrease; ↑, increase; FOV, field of view; kV, tube voltage; mAs, tube current-exposure time product.
Minor image quality effects due to factors like beam divergence and truncation of the FOV not being taken into account.
Beam hardening is somewhat reduced at higher tube potential values (Figure 16).