DiscoveryImages That Changed The WorldEpisode 2BBC World Service Duration: 27 minutesFirst broadcast: Wed 2nd Jun 2010, 10:32 on BBC World Service OnlineLatest broadcast: Thu 3rd Jun 2010, 01:32 on BBC World Service OnlineAvailable for over a yearListen nowDr Mark Lythgoe looks at medical imaging, exploring the impact of X-Rays, foetal ultrasound, brain scanning, and microscopes.GenresFactualScience & NatureBrandDiscoverySeriesDiscovery: Images That Changed The World Source: BBC Online