Role of Combined<sup>68</sup>Ga DOTA-Peptides and<sup>18</sup>F FDG PET/CT in the Evaluation of Gastroenteropancreatic Neuroendocrine Neoplasms
Issued Date
2022-02-01
Resource Type
eISSN
20754418
Scopus ID
2-s2.0-85123105196
Journal Title
Diagnostics
Volume
12
Issue
2
Rights Holder(s)
SCOPUS
Bibliographic Citation
Diagnostics Vol.12 No.2 (2022)
Suggested Citation
Kaewput C., Vinjamuri S. Role of Combined<sup>68</sup>Ga DOTA-Peptides and<sup>18</sup>F FDG PET/CT in the Evaluation of Gastroenteropancreatic Neuroendocrine Neoplasms. Diagnostics Vol.12 No.2 (2022). doi:10.3390/diagnostics12020280 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/87120
Title
Role of Combined<sup>68</sup>Ga DOTA-Peptides and<sup>18</sup>F FDG PET/CT in the Evaluation of Gastroenteropancreatic Neuroendocrine Neoplasms
Author(s)
Author's Affiliation
Other Contributor(s)
Abstract
This review article summarizes the role of combined68Ga DOTA-peptides and18 F-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) in the evaluation of gastroenteropancreatic neuroendocrine neoplasms (GEP-NENs). Patients with GEP-NENs can initially present themselves to a gastroenterologist or endocrinologist rather than cancer specialist; hence, it is vital for a wider group of clinicians to be familiar with the range of tests available for the evaluation of these patients. The role of PET scanning by using68Ga DOTA-peptides has a high sensitivity in the diagnosis of GEP-NENs and to guide patient selection for treatment with somatostatin analogues (SSA) and/or peptide receptor radionuclide therapy (PRRT). The loss of somatostatin receptor (SSTR) expression was found to be associated with an increased glucose metabolism in cells. However, the routine use of SSTR targeted radiotracers in combination with18 F-FDG to evaluate glucose utilization in GEP-NENs is still debatable. In our opinion, in patients with NENs,18 F-FDG PET should be performed in the case of a negative or slightly positive68Ga DOTA-peptides PET scan for assessing the dedifferentiation status, to guide correct therapeutic strategy and to evaluate the prognosis. The approach of combined receptor and metabolic imaging can improve diagnostic accuracy, especially considering the heterogeneity of these lesions. Therefore,68Ga DOTA-peptides and18 F-FDG PET should be considered complementary in patients with GEP-NENs.