Composite image of a fading electrocardiograph (ECG) trace overlayed onto a false-coloured chest X-ray. The size of the heart (the pear-shaped white area just below and right of centre) shows it to be enlarged,a symptom of hypertension. ECGs provide information about the heart's electrical activity | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Terry, Sheila |
Taille de l’image : | 3543 px × 3304 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |