Comparison of CT numbers of ICH and white matter, SD of CSF, and CNR on TNC and VNC images (mean ± SD)a
| TNC Images | VNC Images | P Value | |
|---|---|---|---|
| ICH | 71.5 ± 7.3 | 62.8 ± 9.6 | .000 |
| White matter | 31.0 ± 2.0 | 31.2 ± 3.0 | .675 |
| SD of CSF | 6.1 ± 1.5 | 3.7 ± 0.6 | .000 |
| CNR | 7.0 ± 1.9 | 8.8 ± 3.0 | .000 |
↵a Values are HU in ICH, white matter, SD of CSF, and ratio in CNR.