In the fast-developing field of nanomedicine, a broad variety of materials have been used for the development of advanced delivery systems for drugs, genes, and diagnostic agents. With the recent breakthroughs in the field, we are witnessing a new age of disease management, which is governed by precise regulation of dosage and delivery. This book presents the advances in the use of metal-based and other nanomaterials for medical imaging, diagnosis, theranostics, and drug delivery. It discusses silver, hybrid gold, and surface-modified magnetic nanoparticles, fluorescent quantum dots, lipid bubbles, and nanobubbles. It provides all available information about these materials and describes in detail their advantages and disadvantages and the areas where they could be utilized successfully. The text also covers topics such as improving bioactivity of poorly soluble actives, cellular and molecular toxicology of nanoparticles, and biofate of nanoemulsions.