Localization of Hidden Insulinomas with 68Ga-DOTA-Exendin-4 PET/CT: A Pilot Study.

Antwi, Kwadwo; Fani, Melpomeni; Nicolas, Guillaume; Rottenburger, Christof; Heye, Tobias; Reubi, Jean-Claude; Gloor, Beat; Christ, Emanuel; Wild, Damian (2015). Localization of Hidden Insulinomas with 68Ga-DOTA-Exendin-4 PET/CT: A Pilot Study. Journal of nuclear medicine, 56(7), pp. 1075-1078. Society of Nuclear Medicine 10.2967/jnumed.115.157768

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UNLABELLED (111)In-DOTA-exendin-4 SPECT/CT has been shown to be highly efficient in the detection of insulinomas. We aimed at determining whether novel PET/CT imaging with [Nle(14),Lys(40)(Ahx-DOTA-(68)Ga)NH2]exendin-4 ((68)Ga-DOTA-exendin-4) is feasible and sensitive in detecting benign insulinomas. METHODS (68)Ga-DOTA-exendin-4 PET/CT and (111)In-DOTA-exendin-4 SPECT/CT were performed in a randomized cross-over order on 5 patients with endogenous hyperinsulinemic hypoglycemia. The gold standard for comparison was the histologic diagnosis after surgery. RESULTS In 4 patients histologic diagnosis confirmed a benign insulinoma, whereas one patient refused surgery despite a positive (68)Ga-DOTA-exendin-4 PET/CT scan. In 4 of 5 patients, previously performed conventional imaging (CT or MR imaging) was not able to localize the insulinoma. (68)Ga-DOTA-exendin-4 PET/CT correctly identified the insulinoma in 4 of 4 patients, whereas (111)In-DOTA-exendin-4 SPECT/CT correctly identified the insulinoma in only 2 of 4 patients. CONCLUSION These preliminary data suggest that the use of (68)Ga-DOTA-exendin-4 PET/CT in detecting hidden insulinomas is feasible.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Gynaecology, Paediatrics and Endocrinology (DFKE) > Clinic of Endocrinology, Diabetology and Clinical Nutrition
04 Faculty of Medicine > Department of Gastro-intestinal, Liver and Lung Disorders (DMLL) > Clinic of Visceral Surgery and Medicine > Visceral Surgery
04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > DBMR Forschung Mu35 > Forschungsgruppe Viszeralchirurgie
04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > DBMR Forschung Mu35 > Forschungsgruppe Viszeralchirurgie

04 Faculty of Medicine > Service Sector > Institute of Pathology

UniBE Contributor:

Reubi, Jean-Claude; Gloor, Beat and Christ, Emanuel

Subjects:

600 Technology > 610 Medicine & health
500 Science > 570 Life sciences; biology

ISSN:

0161-5505

Publisher:

Society of Nuclear Medicine

Language:

English

Submitter:

Doris Haefelin

Date Deposited:

14 Jul 2015 07:26

Last Modified:

10 Mar 2016 17:33

Publisher DOI:

10.2967/jnumed.115.157768

PubMed ID:

25999434

Uncontrolled Keywords:

68Ga; exendin-4; glucagon-like peptide-1 receptor targeting; insulinoma

BORIS DOI:

10.7892/boris.70209

URI:

https://boris.unibe.ch/id/eprint/70209

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