Pitfalls in Glucagon-Like Peptide-1 Receptor Imaging Abstract #2990

Introduction: Physiological pancreatico-duodenal DOTA-Exendin-4 uptake in the Brunner’s glands of the proximal duodenum occurs in Glucagon-like peptide-1 receptor (GLP-1R) imaging and is a known potential pitfall.
Aim(s): The aim of this study was to analyze pancreatico-duodenal uptake in GLP-1R SPECT/CT and PET/CT and identify other potential reading pitfalls in GLP-1R imaging.
Materials and methods: Data of a prospective study, including 52 consecutive patients, was used for this post-hoc evaluation of pitfalls in GLP-1R scans. All patients underwent one 68Ga-DOTA-exendin-4 PET/CT and two 111In-DOTA-exendin-4 SPECT/CT scans (4 and 72h p.i.) in a randomized crossover order. Reference-standard was surgery with histopathological confirmation of an insulinoma and normalization of blood glucose levels post-surgery.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Nuclear Medicine - Imaging and Therapy (PRRT)
Presenting Author: Dr. Antwi Antwi

To read results and conclusion, please login ...

Further abstracts you may be interested in

#1802 Sensitivity of Glucagon-Like Peptide-1 Receptor (GLP1-R) SPECT/CT, PET/CT and MRI for the Localization of Benign Insulinomas: Interim Analysis of a Prospective Imaging Efficacy Study
Introduction: 40 patients (pat.) with positive whipple trias were enrolled (ClinicalTrials.gov, NCT02127541).
Conference: 14th Annual ENETS conference 2017 (2017)
Category: Imaging (radiology, nuclear medicine, endoscopy)
Presenting Author: Dr. Antwi Antwi
Authors: Antwi A, Fani M, Heye T, Nicolas G, ...
Keywords: insulinoma, GLP-1R
#477 Glucagon-Like Peptide 1 Receptor (GLP-1R) Imaging for the Preoperative Localization of Benign Insulinomas in 30 Patients
Introduction: Biochemical diagnosis of endogenous hyperinsulinemic hypoglycemia is straightforward. Surgical removal of an insulinoma is hampered by difficulties to localize it using conventional radiological procedures. In vitro data suggest that human insulinoma cells exhibit a high density of GLP-1R. 111In-exendin-4 is an 111In labeled GLP-1R agonist that binds with high affinity to GLP-1R and may be helpful in localizing insulinomas.
Conference: 9th Annual ENETS Conference (2012)
Category: Clinical
Presenting Author: MD, PhD Emanuel Christ
Authors: Christ E, Forrer F, Wild D, Clerici T, ...
#1057 Localisation of Insulinoma and Beta-Cells: Comparison of Glucagon-Like Peptide-1 Receptor (GLP1-R) SPECT/CT, PET/CT and MRI. Preliminary Results of a Prospective Clinical Study.
Introduction: SPECT/CT imaging with GLP1-R specific radiotracers like 111In-DOTA-exendin-4 have already proved to be a useful tool for the preoperative localisation of insulinomas. PET/CT has several advantages over SPECT/CT: lower radiation exposure, less time consumption and higher spatial resolution.
Conference: 12th Annual ENETS Conference 2015 (2015)
Category: Imaging (radiology, nuclear medicine, endoscopy)
Presenting Author: Dr. Christof Rottenburger
Authors: Rottenburger C, Antwi K, Heye T, Fani M, ...
#2003 Comparison of Glucagon-Like-Peptide-1 (GLP-1) Receptor PET/CT, SPECT/CT and 3T MRI for the Localisation of Insulinomas: Evaluation of Accuracy in a Prospective Crossover Imaging Study
Introduction: Benign insulinomas are the most prevalent cause of endogenous hyperinsulinaemic hypoglycaemia (EHH) in adults and due to their small size difficult to localise.
Conference: 15th Annual ENETS conference 2018 (2018)
Category: Imaging and Interventions (radiology, endoscopy)
Presenting Author: Dr. Antwi Antwi
Authors: Antwi A, Heye T, Fani M, Nicolas G, ...
#2737 Identification of a Novel MAFA Missense Mutation Causing Familial Insulinomatosis
Introduction: Insulinomatosis is a rare pancreatic disease characterized by an adult-onset condition of recurrent hyperinsulinemic hypoglycemia caused by multiple insulin-secreting neuroendocrine tumors.
Conference: 17th Annual ENETS Conference 2020 (2020)
Category: Epidemiology/Natural history/Prognosis - Registries, nationwide and regional surveys
Presenting Author: PD. Dr. Christian Fottner