Subjective image-quality analysis scores for DE and SECTa
| Anatomic Level | Noise | Sharpness | Streak Artifacts | Overall Image Quality | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DECT | SECT | P | DECT | SECT | P | DECT | SECT | P | DECT | SECT | P | |
| Nasopharynx | 5 (4–5) | 5 (4–5) | .305 | 5 (4–5) | 5 (4–5) | .552 | – | – | – | 5 (4–5) | 5 (4–5) | .557 |
| Floor of mouth | 5 (4–5) | 5 (4–5) | .732 | 5 (4–5) | 5 (4–5) | .154 | – | – | – | 5 (4–5) | 5 (4–5) | .664 |
| Arytenoids | 5 (4–5) | 5 (4–5) | .721 | 5 (4–5) | 5 (3–5) | .813 | – | – | – | 4 (3–5) | 4 (4–5) | .896 |
| Lower thyroid | 3 (2–5) | 3.5 (2–5) | .498 | 3 (2:5) | 3 (2:5) | .122 | 3 (2–5) | 3 (2–5) | .108 | 3.5 (2:5) | 4 (2:5) | .214 |
| Arch of aorta | 3 (2:5) | 4 (2:4) | .098 | 3 (2:5) | 4 (2:4) | .083 | 3 (2:5) | 4 (2:4) | .061 | 3 (2:5) | 4 (2:4) | .288 |
↵a See “Materials and Methods” section for details of scales. Data are presented as median (range). All P values are nonsignificant (>.05).