“…Receptors that can be exploited for imaging include the NE transporter, glucose transporter (GLUT), amino acid transporter, and somatostatin receptor (SSTR) ( 87 , 88 ). Currently, there are three types of PET/CT radiopharmaceuticals that exert their actions through these receptors: 18 F-FDG, 18 F-fluorodopa ( 18 F-FDOPA), and 68 Galium ( 68 Ga)- tetraazacyclododecanetetraacetic acid (DOTA) analogs ( 89 – 91 ). Functional imaging using PET/CT has proven to be superior to 123 I-MIBG SPECT not only for the higher detection, sensitivity, localization, and resolution, but also for reducing indeterminate or equivocal findings by about 20 to 40% ( 92 ).…”