Emerging Role of 18F-NaF PET/Computed Tomographic Imaging in Osteoporosis: A Potential Upgrade to the Osteoporosis ToolboxPET Imaging in OsteoarthritisSarcopenia and Myositis Revisited: Emerging Role of Fluorine-18 Fluorodeoxyglucose PET in Muscle ImagingClinical Applications of PET in Evaluating the Aging SpinePET-Computed Tomography in Bone and Joint InfectionsAtherosclerosis Imaging: Positron Emission TomographyRole of PET/Computed Tomography in Elderly Thyroid Cancer: Tumor Biology and Clinical ManagementBrain PET Imaging: Approach to Cognitive Impairment and DementiaBrain PET and Cerebrovascular DiseaseBrain PET Imaging: Frontotemporal DementiaMulti-Scale Temporal Imaging: From Micro- and Meso- to Macro-scale-time Nuclear MedicineAging Muscles, Myositis, Pain, and Peripheral Neuropathies: PET Manifestations in the Elderly