Dr Mark Lythgoe, Director of the Centre for Advanced Biomedical Imaging, tells the untold story of medical imaging and why uncovering our inner selves changed the world.

A hunched figure peering down a microscope is the ultimate symbol of the scientist - from George Eliot's Dr Lydgate in Middlemarch to adverts for cocoa powder. Mark Lythgoe explores the cultural implications of revealing a hidden kingdom and visits a doughnut-shaped microscope the size of five football pitches near Oxford. Show less