Open heart surgery,showing the implantation of an artificial heart valve made from a pig's dura mater,the tough outer membrane of the brain. The valve is tricuspid,meaning it has three "leaflets": blood flows through the valve from the front,but will not be allowed to return when back pressure forces the leaflets shut. The artificial valve (left) is about to be implanted | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Leah, David |
Taille de l’image : | 5164 px × 3455 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |