Dr. An has extensive experience in MR and PET/MR imaging and is the associate director of the Center for Clinical Imaging Research (CCIR). Her expertise includes MRI physics, MR sequence design and programming, image reconstruction, image and data analysis, PET/MR attenuation correction, and motion correction. Simultaneously acquired anatomical, physiological and metabolic MR imaging and physiological and molecular PET imaging provide unprecedented diagnostic and prognostic values in many diseases. A specialty of Dr. An’s group has been developing novel MR based PET attenuation methods. An application area is the important MR imaging challenge of quantifying cerebral oxygenation. Collaborators: Ackerman, Hershey, Woodard.