AIF	Arterial input function
AJCC	American Joint Committee on Cancer
D	Pure diffusion coefficient [mm2/s]
D*	Pseudo-diffusion coefficient [mm2/s]
DCE	Dynamic contrast enhanced
DMFS	Distant metastasis-free survival
DWI	Diffusion-weighted imaging
f	Perfusion fraction
GTV	Gross tumor volume
HNSCC	Head and neck squamous cell carcinoma
IVIM	Intravoxel incoherent motion
Kep	The rate constant for transfer of contrast agent from extravascular, extracellular space to the plasma [min−1]
Ktrans	The rate constant for transfer of contrast agent from plasma to extravascular, extracellular space [min−1]
LRC	Loco-regional control
LRF	Loco-regional failure
LRFFS	Loco-regional failure-free survival
MATV	Mean of the active tumor volume
OPSCC	Oropharyngeal squamous cell carcinoma
OS	Overall survival
SUV_mean	Mean of SUV included in the VOI
SUV_peak	Sphere of 8 voxels around the voxel with the highest SUV in the delineated VOI
TLG	Total lesion glycolysis (SUVmean × MATV)
TLG40%	Total lesion glycolysis, including voxels with SUV higher than 40% of SUV_peak
Ve	Fractional volume of the extravascular extracellular space