In the first part of this video the four chambers of the heart are beating in real time – you can see the valves opening and closing.

 

When the cardiologist has looked at them in this mode, which shows up any major abnormalities, he can switch on a colour mode and an electrical wave form mode which allow him to see any small problems in the functioning of the heart.

 

As you watch this short video you will see all these modes in this patient with a normal heart.