. 2018 Feb 5;8(1):1–14.

Table 3.

Summary of available studies with PET tracers in ACC

	Number of patients with ACC	PET Tracer	Results
Kim et al [64]	34	¹⁸F-FDG	Pre-treatment SUVmax of the primary tumor is an independent prognostic factor in patients with ACC of the head and neck
Jung JH et al [66]	40	¹⁸F-FDG	¹⁸F-FDG PET/CT showed comparable sensitivity to conventional CT and SUVmax and TLG were significant prognostic factors
Tomura et al [65]	27 head-neck (5 ACC)	¹⁸F-FDG vs ¹¹C MET	MET-PET/CT showed superior inter-rater agreement and had higher uptake for tumors at the skull base than FDG-PET/CT
Lindoholm et al [73]	39 SCC	¹¹C MET	MET PET/CT imaging is effective in SCC in head and necK
Nuutient et al [74]	15 SCC	¹¹C MET	No significance to predict the response to RT
Hasebe et al [75]	26	¹¹C MET	TNR in CIRT is an independent factor for predicting local recurrence, the incidence of metastasis, and the prognosis
Toubaru et al [76]	67	¹¹C MET	The TNRpre was significantly related to the occurrence of metastasis and the disease-specific survival after CIRT TNRpost was a factor that was significantly related to the development of local recurrence as well
Hasabe et al [77]	85 head-neck malignant melanoma	¹¹C MET	MET-PET/CT is useful for predicting the outcomes of patients with head and neck mucosal malignant melanoma treated with CIRT
Klein Nulent et al [80]	9	⁶⁸Ga PMSA	PSMA PET/CT is able to detect and visualize local recurrent and distant metastatic disease

Abbreviations: SCC, squamous cell carcinoma. TNR, tumor-to-normal ratio.