Magnetic resonance imaging, MRI, is a powerful medical imaging technique. Thanks to the stunning images created, MRI frequently crops up in both the news and popular science television.

However, for most our understanding of precisely how this revolutionary technique works is a mystery, never seeing beyond the large doughnut-shaped magnet.

In this film, Dr Nikolaus Weiskopf, Head of Physics at the Wellcome Trust Centre for Neuroimaging, skillfully teases apart the constituent parts of MRI for the curious non-scientist. (less info)