SSTR2 and meningioma: Somatostatin receptor subtype 2 (SSTR2)-based positron emission tomography (PET), in particular 68Ga-DOTATOC, 68Ga-DOTATATE, and 68Ga-DOTANOC, has been reported as a useful diagnostic tool in meningioma patients, with level 2 evidence in tumor contouring for radiotherapy planning [17].