This volume briefly introduces the essence of the physics and function of magnetic resonance imaging. All the important and clinically relevant concepts, together with the underlying physics, are introduced in a comprehensible fashion. Consequently, the emphasis is on a clearly structured text. One chapter is dedicated to the increasing importance of MRI with regard to non-invasive diagnosis of the vascular system. The latest developments leading towards ever faster MR sequences are presented. This text addresses first and foremost medical doctors, medical laboratory assistants and technicians, and students who wish to become aquainted with the basics of MRI.