How does MRI work?

From the reviews: 'The authors describe in English in the plainest fashion, and within hardly more than 100 pages, the theoretical and technical bases of magnetic resonance imaging. ... the book should be warmly recommended to anyone after they have become accustomed to MRI. In such circumstances this is a very comprehensive handbook, particularly useful as a reminder of the concepts of MRI.... a valuable technical handbook...' Surgical and Radiological Anatomy Vol. 26, Issue 3, 2004.