- The BMJ iPad app brings you the best of print and online, including live links to the latest news, blogs, video, and podcasts. Get the BMJ iPad app.
- Keep up to date with cardiology: Access the latest cardiovascular medicine resources from across BMJ Group.
- Our online table of contents is updated at least twice each day. Read all articles published in the last 7 days.
- OPEN ACCESS: All research articles are freely available online, with no word limit. Find out more about the BMJ's open access policy. Submit your paper.
Think then scan, don't scan then think
Until now, the increased risk of cancer from CT scans has been modelled from the data gathered from survivors of the Hiroshima and Nagasaki bombings. However, new BMJ research, based on a large Australian cohort, offers new evidence to support the modelling. John Matthews, from the university of Melbourne, joins us to explain what they found.
Also this week, social media is relatively new – but did you realise that doctors had been using social networks to improve health for centuries? Enrico Coiera, director of the Centre for Health Informatics at the University of New South Wales, explains more, and how in the digital age we might try and use virtual networks to do the same job on a larger scale.
CT scan and risk of cancer: 0:37
Social networks and public health: 9:53