Dr. Lauterbur is co-author with Dr. Zhi-Pei Liang of Principles of Magnetic Resonance Imaging: A Signal Processing Perspective (March 2001, Wiley-IEEE Press). Dr. Lauterbur and Sir Peter are both Past Presidents of the International Society for Magnetic Resonance in Medicine and current Honorary Editorial Board members of the Wiley-Liss journal Magnetic Resonance in Medicine.

MRI generates images of internal organs by visually interpreting the action of radio waves within a magnetic field in the hydrogen atom nuclei of the body's water molecules, which are distributed differently according to tissue type. It is an extremely valuable non-invasive diagnostic tool, particularly useful for the detailed imaging of the brain and spinal cord, and in the diagnosis and treatment of cancer; more than 60 million MRI examinations were performed in 2002.

In the early 1970s, Dr. Lauterbur discovered the possibility of creating a two-dimensional image by introducing gradients into the magnetic field and analyzing the characteristics of the emitted radio waves. Coupled with Sir Peter's work in the mathematical analysis of signals and the development of extremely fast imaging, these innovations built on an earlier discovery (recognized by a Nobel Prize in 1952) to make today's MRI technology possible.

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