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Barrio, Martin; Czernin, Johannes; Fanti, Stefano; Ambrosini, Valentina; Binse, Ina; Du, Lin; Eiber, Matthias; Herrmann, Ken and Fendler, Wolfgang P. (2017): The Impact of Somatostatin Receptor-Directed PET/CT on the Management of Patients with Neuroendocrine Tumor: A Systematic Review and Meta-Analysis. In: Journal of Nuclear Medicine, Vol. 58, No. 5: pp. 756-761

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Abstract

Somatostatin receptor (SSTR) imaging is widely used for guiding the management of neuroendocrine tumor (NET) patients. 68Ga-DOTATATE approval by the U.S. Food and Drug Administration has triggered widespread clinical interest in SSTR PET/CT throughout the United States. Here, we performed a systematic review and meta-analysis to evaluate the impact of SSTR PET/CT on the management of patients with NETs. Methods: A comprehensive literature search was performed using The National Center for Biotechnology Information PubMed online database, applying the following key words: "management" AND "PET" AND "neuroendocrine". Fourteen of 190 studies were deemed suitable based on the following inclusion criteria: original research, cohort study, number of patients 10 or more, and reported change in management after SSTR PET/CT. Change in management across studies was determined by a random-effects model. Results: A total of 1,561 patients were included. Overall, change in management occurred in 44% (range, 16%-71%) of NET patients after SSTR PET/CT. In 4 of 14 studies, SSTR PET/CT was performed after an 1111n-Octreotide scan. In this subgroup, additional information by SSTR PET/CT led to a change in management in 39% (range, 16%-71%) of patients. Seven of 14 studies differentiated between inter- and intramodality changes, with most changes being intermodality (77%;intramodality, 23%). Conclusion: The management was changed in more than one third of patients undergoing SSTR PET/CT even when performed after an "'In-Octreotide scan. Intermodality changes were 3 times more likely than intramodality changes, underlining the clinical impact of SSTR PET/CT.

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