Table 1.
Attenuation and image noise
| TNC | CIV | VNCa | VNCv | |
|---|---|---|---|---|
| Mean attenuation (psoas muscle) | 42.9 ± 7.2 | 52.2 ± 7.7* | 43.5 ± 6.5 | 44.6 ± 6.4 |
|
Image noise (psoas muscle) |
17.12 ± 0.62 | 21.76 ± 0.62* | 16.33 ± 0.62 | 16.44 ± 0.62 |
CI, conventional image; TNC, true non-contrast; VNC, virtual non-contrast.
Mean attenuation in the psoas muscle in Hounsfield units with corresponding standard deviation (upper line) and associated image noise in the psoas muscle with corresponding standard deviation in TNC phase, venous phase (CIV) and VNC of arterial and venous phase images (VNCa and VNCv respectively). Asterisk indicates statistical significance compared to TNC images.