Please assess the completion status of the following clinical trial:

Trial Title: A Feasibility Study on the Use of F-18-FDG-PET and Optical Imaging in Evaluation of Radiation-induced Oral Mucositis

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: COHORT
- Primary Purpose: None
- Time Perspective: PROSPECTIVE
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* Non-operated histologically confirmed squamous cell carcinoma of the oral cavity, oropharynx (except the posterior wall) and lymph node metastases from the unknown primary tumor (CUP)~* Stage T1-4; Tx N+ for the CUP~* Multidisciplinary Group of Head and Neck Tumors at Ghent University Hospital decision of radical radiotherapy (±concurrent chemotherapy)~* Informed consent obtained, signed and dated before specific protocol procedures.~Exclusion Criteria:~* Age \< 18 years~* Pregnant or lactating women~* Active infection or fistula in the oral/oropharyngeal mucosa~* Previous cancer of the oral cavity and the oropharynx~* Prior head-and-neck radiotherapy~* Expectation of non-compliance with the study protocol~* Known allergy for topical anesthetics (Xylocaïne)

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Based on this trial design, predict the completion outcome and termination type (if applicable).