Update on Molecular Imaging and Precision Medicine in Lung Cancer PET Imaging for Hematologic Malignancies PET Imaging for Breast Cancer 18F-FDG-PET/CT Imaging for Gastrointestinal Malignancies Precision Nuclear Medicine: The Evolving Role of PET in Melanoma PET Imaging for Head and Neck Cancers PET Imaging of Neuroendocrine Tumors PET Imaging for Prostate Cancer PET Imaging for Gynecologic Malignancies PET Cardiac Imaging (Perfusion, Viability, Sarcoidosis, and Infection) Clinical Applications of PET/MR Imaging Immune PET Imaging Novel Tracers and Radionuclides in PET Imaging