Simultaneous Hyperpolarized [1-13C]Pyruvate and 18F-FDG PET/MRS in Cancer Patients

Injection of 4 MBq/kg of 18F-FDG followed by dynamic positron emission tomography (PET) imaging

Injection of one bolus of 0.43 ml/kg of approximately 250 mM hyperpolarized \[1-13C\]Pyruvate followed by magnetic resonance spectroscopy (MRS) / magnetic resonance spectroscopy imaging (MRSI). After a 5-30 min pause, injection of a second bolus of 0.43 ml/kg of approximately 250 mM hyperpolarized \[1-13C\]Pyruvate followed by MRS / MRSI.

Regional dynamic PET acquisition for up to 90 minutes following 18F-FDG injection is performed focused on a region-of-interest (ROI). Anatomical magnetic resonance imaging (MRI) is performed in the ROI, including diffusion weighted imaging (DWI) and contrast enhanced imaging (DCE). MRS/MRSI is performed following the injections of hyperpolarized \[1-13C\]Pyruvate.