Quantitative evaluation of CT attenuation (HU) of the apex of the tongue and nuchal muscle
| Hybrid-IR+MAR (Mean) | MBIR+MAR (Mean) | Difference | ||
|---|---|---|---|---|
| 95% CI | P Valuea | |||
| Mean of apex of the tongue (HU) | 103.7 ± 52.5 | 91.9 ± 50.6 | 8.2–15.4 | <.01b |
| Mean of nuchal muscle (HU) | 64.9 ± 6.7 | 64.0 ± 6.7 | 0.1–1.5 | .025b |
| SD of apex of the tongue (HU) | 82.9 ± 56.0 | 74.1 ± 64.1 | 2.7–14.8 | <.01b |
| SD of nuchal muscle (HU) | 8.9 ± 1.6 | 7.5 ± 2.0 | 1.1–1.7 | <.01b |