False-colour scintigram (gamma camera scan) of a human heart showing ischaemia (reduced blood flow) & myocardial infarction,the death of a section of heart muscle resulting from an obstruction in a coronary artery - a heart attack. The image displays the distribution of radioactivity emitted by a previously-injected radionuclide,Thallium- 201,according to the amount of light given off by a scintillator (a gamma camera) as it is struck by radiations of different intensities. The red areas represent heart muscle with an adequate blood supply; a healthy heart would appear as a red horseshoe. Here,the horseshoe is incomplete,with only an isolated red area on the left | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / CNRI |
Taille de l’image : | 4829 px × 3697 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |