This book provides a comprehensive overview of both the physics and the clinical applications of MRI, including practical guidelines for imaging. The authors define the importance of MRI in the diagnosis of several disease groups in comparison or combination with other methods. Chapters dealing with basic principles of MRI, MR spectroscopy (MRS), interventional MRI and functional MRI (fMRI) as well as the application of MRI in radiotherapy treatment planning illustrate the broad range of applications for MRI. Both standard and cutting-edge applications of MRI are included. Furthermore, chapters on molecular imaging and nanotechnology give glimpses into the future of the field and outline the potential role of MRI in molecular medicine. This book is intended for a wide audience, including radiologists in general practice, those who specialize in MRI, physicists, and clinicians in other fields.