SSTR2 and neuroblastoma: To compare the effectiveness between 68Ga-DOTA-TATE PET and 123I-MIBG SPECT in our preclinical models, we further assessed 123I-MIBG uptake in three neuroblastoma xenograft models, including NB cells expressed high, intermediate, and low amount of SSTR2 protein in vitro, BE(2)C, SK-N-BE(2), and CHLA-15 cells, respectively.