RT Journal Article SR Electronic T1 Substructural Hippocampal Glucose Metabolism Observed on PET/MRI JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 1545 OP 1548 DO 10.2967/jnumed.110.076182 VO 51 IS 10 A1 Zang-Hee Cho A1 Young-Don Son A1 Hang-Keun Kim A1 Sung-Tae Kim A1 Sang-Yoon Lee A1 Je-Geun Chi A1 Chan-Woong Park A1 Young-Bo Kim YR 2010 UL http://jnm.snmjournals.org/content/51/10/1545.abstract AB The hippocampus is one of the best-known neural structures in the brain and has been of interest in observing the substructures and their metabolic functions. However, it has been difficult to distinguish its substructures and functions in vivo because of its small size. Methods: 18F-FDG PET and high-resolution MRI of the hippocampus were performed on 5 healthy subjects using a PET/MRI system. The metabolism of each hippocampal substructure was measured in vivo on the basis of the MR images. Results: The dentate gyrus and cornu ammonis 4 showed the highest glucose uptake in the healthy subjects. Conclusion: Measuring glucose metabolism in the substructures of the hippocampus could provide a new tool for the future investigation of related brain diseases or functional studies, such as Alzheimer disease or memory and learning studies.