It is with great pleasure that we present this completely revised English e- tion of our book How Does MRI Work? An Introduction to the Physics and Function of Magnetic Resonance Imaging only two years afer publication of the frst English edition. We are particularly pleased that our introductory textbook met with great approval in the English-speaking world and not just in the German-speaking countries. Tis success has been an enormous - centive for us to further improve and update the text. For this reason, we are now presenting a second edition. All chapters have been thoroughly revised...