Emerging Role of 18F-NaF PET/Computed Tomographic Imaging in Osteoporosis: A Potential Upgrade to the Osteoporosis Toolbox PET Imaging in Osteoarthritis Sarcopenia and Myositis Revisited: Emerging Role of Fluorine-18 Fluorodeoxyglucose PET in Muscle Imaging Clinical Applications of PET in Evaluating the Aging Spine PET-Computed Tomography in Bone and Joint Infections Atherosclerosis Imaging: Positron Emission Tomography Role of PET/Computed Tomography in Elderly Thyroid Cancer: Tumor Biology and Clinical Management Brain PET Imaging: Approach to Cognitive Impairment and Dementia Brain PET and Cerebrovascular Disease Brain PET Imaging: Frontotemporal Dementia Multi-Scale Temporal Imaging: From Micro- and Meso- to Macro-scale-time Nuclear Medicine Aging Muscles, Myositis, Pain, and Peripheral Neuropathies: PET Manifestations in the Elderly