Differential Radiation Protection of Salivary Glands versus Tumor by Tempol with Accompanying Tissue Assessment of Tempol by Magnetic Resonance Imaging

Abstract
Purpose: The nitroxide free radical, Tempol, was evaluated for potential differential radiation protection of salivary glands and tumor using fractionated radiation. Mechanistic information was explored by monitoring the presence and bioreduction of Tempol in both tissues noninvasively by magnetic resonance imaging (MRI).