Neuroradiology    Functional MRI Safety and Artifacts during Deep Brain Stimulation: Experience in 102 Patients   With a priori local safety testing, 1.5- and 3-T MRI may be safely performed in participants with implanted deep brain stimulation (DBS) systems as the DBS artifact only affects a small proportion of the brain.       Alexandre Boutet, Tanweer Rashid...Andres M. Lozano

Editorial: MRI in Patients with Deep Brain Stimulation Electrodes: Balancing Risks and Benefits Alastair J. Martin

Hyperpolarized Pyruvate MR Spectroscopy Depicts Glycolytic Inhibition in a Mouse Model of Glioma   Carbon 13 MR spectroscopy of hyperpolarized pyruvate provides measurements of baseline metabolism and immediate treatment response to glycolytic inhibition in an orthotopic mouse model of glioma.       Keith A. Michel, Rafal Zielinski...Dawid Schellingerhout