Surgical analysis. (cover story)

Puzzles that engineers and doctors face have much in common. The human body, after all, can be thought of as an engineered system. It's natural then, that medical researchers should appropriate for their own purposes engineering analysis technology originally developed to predict the flow of fluids through engines or of water around bridge stanchions. David Gosman professor of computational fluid dynamics at Imperial College of Science, Technology, and Medicine in London uses computational fluid dynamics to study blood flow.