1 Molecular Imaging: Dream or Reality?.- 2 Target Discovery and Validation.- 3 Noninvasive Imaging in Drug Discovery and Development.- 4 Internal Dose Assessment - Extrapolation from Animal Species to the Human.- 5 PET for Drug Development.- 6 Future Directions in Molecular Imaging.- 7 Regulatory Implications - The EU Perspective.- 8 Nonclinical Development of Radiopharmaceuticals: Regulatory Considerations for the United States Food and Drug Administration.- 9 The Japanese Perspective on Radiopharmaceuticals.- Previous Volumes Published in This Series.