Glucose Loading Enhances the Value of 18 F-FDG PET/CT for the Characterization and Delineation of Cerebral Gliomas

Cancers
Dongwoo KimMijin Yun

Abstract

This study aimed to assess how to enhance the value of 18F-Fluorodeoxyglucose (FDG) PET/CTs for glioma grading and better delineation of the tumor boundary by glucose loading. In mouse models of brain tumor using U87MG cells, 18F-FDG-PET images were obtained after fasting and after glucose loading. There was a significant difference in the tumor-to-normal cortex-uptake ratio (TNR) between the fasting and glucose-loading scans. 14C-2-Deoxy-D-glucose (14C-DG) uptake was measured in vitro using U87MG, U373MG and primary neurons cultured with different concentrations of glucose. The tumor-to-neuron ratio of 14C-DG uptake increased with up to 10 mM of glucose. Finally, 10 low-grade and 17 high-grade glioma patients underwent fasting and glucose loading 18F-FDG PET/CT and the TNR was compared between scans. The effect of glucose loading was significant in high-grade but not in low-grade gliomas. The receiver operating characteristic curve analyses with a cut-off TNR of 0.81 showed a higher area under the curve after glucose loading than fasting for differentiating low-grade versus high-grade gliomas. In addition, the glucose loading PET/CT was more useful than the fasting PET/CT for the discrimination of oligodendrogliomas from IDH-w...Continue Reading

References

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May 19, 2019·European Journal of Nuclear Medicine and Molecular Imaging·Dongwoo KimMijin Yun
Jun 12, 2019·Journal of Nuclear Medicine Technology·Ismet SarikayaPrem Sharma

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Citations

Feb 4, 2021·Molecular Imaging and Biology : MIB : the Official Publication of the Academy of Molecular Imaging·Qi QiJonathan D Thiessen
Feb 9, 2021·Biomacromolecules·Johanna K ElterFelix H Schacher

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