Qualitative 18F-FDG PET/CT Response Evaluation After Chemotherapy or Radiotherapy for Head and Neck Squamous Cell Carcinoma: Is There an Equivocal Group?

TO THE EDITOR: We read with great interest the recent article by Marcus et al. ([1][1]). The objective of this retrospective study on 214 patients with head and neck squamous cell carcinoma was to validate qualitative interpretation criteria for 18F-FDG PET/CT assessment of response...