<sup>18</sup>F-Labeled Somatostatin Analogs as PET Tracers for the Somatostatin Receptor: Ready for Clinical Use.

Leupe, Hannes; Ahenkorah, Stephen; Dekervel, Jeroen; Unterrainer, Marcus; Van Cutsem, Eric; Verslype, Chris; Cleeren, Frederik; Deroose, Christophe M · J Nucl Med · 2023

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Abstract

Molecular imaging of the somatostatin receptor plays a key role in the clinical management of neuroendocrine tumors. PET imaging with somatostatin analogs (SSAs) labeled with <sup>68</sup>Ga or <sup>64</sup>Cu is currently the gold standard in clinical practice. However, widespread implementation of <sup>68</sup>Ga imaging is often hampered by practical and economic issues related to <sup>68</sup>Ge/<sup>68</sup>Ga generators. <sup>18</sup>F offers several advantages to tackle these issues. Recent developments in radiochemistry have allowed a shift from <sup>68</sup>Ga toward <sup>18</sup>F labeling, leading to promising clinical translations of <sup>18</sup>F-labeled SSAs, such as Gluc-Lys-[<sup>18</sup>F]FP-TOCA, [<sup>18</sup>F]F-FET-βAG-TOCA, [<sup>18</sup>F]AlF-NOTA-octreotide, [<sup>18</sup>F]SiTATE, and [<sup>18</sup>F]AlF-NOTA-JR11. This review gives an update of currently available clinical data regarding <sup>18</sup>F-labeled SSA tracers and provides justification for the clinical application of this class of tracers.

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