A series on the current work of Fellows of the Royal Society
With Professor J. McMichael, F.R.S.
The hidden stream of blood which flows through the heart and lungs can usually only be studied indirectly. Recent research at the Postgraduate Medical School of London has produced some astonishing and unique devices for diagnosing heart and lung diseases.
Outside broadcast cameras visit the Postgraduate Medical School at Hammersmith Hospital to 'see' some of these tools and to meet the doctors using them.