Qualitative assessment of image quality, based on average ratings of 2 readers (N = 64 subjects)
| MBIR | ASiR | Difference (MBIR-ASiR) | |||||
|---|---|---|---|---|---|---|---|
| Mean | (95% CI) | Mean | (95% CI) | Mean | (95% CI) | P Valuea | |
| Nasopharynx | 4.80 ± 0.26 | (4.74–4.87) | 4.16 ± 0.31 | (4.08–4.23) | 0.65 ± 0.30 | (0.57–0.72) | <.001 |
| Oropharynx | 3.74 ± 0.60 | (3.59–3.89) | 3.08 ± 0.64 | (2.92–3.24) | 0.66 ± 0.37 | (0.56–0.75) | <.001 |
| Vocal cord | 3.73 ± 0.53 | (3.59–3.86) | 4.02 ± 0.37 | (3.92–4.11) | −0.29 ± 0.53 | (−0.42 to −0.16) | <.001 |
| SC junction | 3.41 ± 0.48 | (3.29–3.53) | 3.75 ± 0.25 | (3.69–3.82) | −0.34 ± 0.52 | (−0.47 to −0.21) | <.001 |
| Overall IQ | 3.85 ± 0.32 | (3.77–3.93) | 3.69 ± 0.28 | (3.62–3.76) | 0.17 ± 0.31 | (0.09–0.24) | <.001 |
Note:—SC indicates sternoclavicular; IQ, image quality.
↵a Wilcoxon signed ranked test.