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Updated: May 7, 2026

Radionuclide-fluorescence Reporter Gene Imaging to Track Tumor Progression in Rodent Tumor Models
Published on: March 13, 2018
Oral contrast enhances the resolution of in-life NIS reporter gene imaging
L Suksanpaisan1, L Pham, S McIvor
1Department of Molecular Medicine, Mayo Clinic, Rochester, MN, USA.
Abstract:
Sodium iodide symporter (NIS) reporter gene imaging is an excellent technology for noninvasive cell fate determination in living animals unless the NIS-transduced cells reside in perigastric organs such as the spleen, liver, diaphragm, omentum, pancreas, perigastric lymph nodes or perigastric tumor deposits. Here we report that orally administered barium sulfate enhances CT definition of the stomach, masks background gamma ray emissions from the stomach and enhances signal detection from radiotracer uptake in NIS-transduced organs.
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