Mean lesion conspicuity* | Diagnostic confidence† | ||||
Site | cePET/CT | cePET/MR imaging | T2w cePET/MR imaging | cePET/MR imaging | T2w cePET/MR imaging |
Nasopharynx | 2.3 | 3.1 | 2.4 | 0.9 | 0 |
Sinonasal cavities | 4.0 | 4.0 | 3.7 | 0 | −0.3 |
Oropharynx | 1.9 | 3.3 | 3.1 | 0.6 | 0.6 |
Oral cavity | 2.3 | 3.3 | 3.0 | 0.3 | 0.3 |
Hypopharynx | 2.0 | 3.0 | 2.6 | 0.6 | 0.6 |
Larynx | 2.3 | 3.0 | 2.8 | 0.3 | 0 |
↵* Grades 1–4, with 4 representing highest degree of morphologic recognizability.
↵† Superiority of modalities regarding diagnostic confidence, as graded with numeric values between −1 and 1. Grade of −1 implies higher diagnostic impact of PET/CT, whereas grade of 1 implies higher diagnostic impact of PET/MR imaging.