The fusion of PET and CT provides the complementarity of two advantages that much more attention focused on the clinical application of PET-CT in the radiotherapy of head and neck cancer.

• PET-CT实现了PET和CT的两种技术的优势互补,使其在头颈部肿瘤放疗中的临床应用已受到越来越多的关注,但对临床的指导意义目前仍存在争议。