The diagnostic accuracy of 68Ga-SST-analogues PET/CT is superior to 131I-MIBG; thus, in the case of negative 123I-MIBG scan in patients with a high pretest probability of phaeochromocytoma or paraganglioma, 68Ga-labeled SST-analogues PET/CT should be considered. The gene discussed is SST; the disease is paraganglioma.