0722
Deuterium metabolic imaging of tumor burden and response to therapy in mutant IDH gliomas in vivo
Celine Taglang1, Georgios Batsios1, Mers Tran1, Anne Marie Gillespie1, Hema Artee Luchman2, Russell O Pieper3, Sabrina M Ronen1, and Pavithra Viswanath1
1Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States, 2Cell Biology and Anatomy, University of Calgary and Hotchkiss Brain Institute, Calgary, AB, Canada, 3Neurological Surgery, University of California San Francisco, San Francisco, CA, United States
Here, we show that [6,6’-2H]-glucose non-invasively monitors tumor burden and response to therapy in preclinical low-grade glioma models at early timepoints prior to alterations in tumor volume, pointing to its potential to assess pseudoprogression, which is a challenge in glioma imaging.
Figure 3. [6,6’-2H]-glucose flux to lactate is localized to the tumor region in low-grade gliomas in vivo. Representative metabolic heatmaps from 2D CSI studies in mice bearing orthotopic BT257 tumor xenografts following injection of a bolus of [6,6’-2H]-glucose. Left panel shows a representative axial T2-weighted MR image while the right panel shows a metabolic heatmap of the SNR of lactate produced from [6,6’-2H]-glucose.