False-colour scintigram (gamma camera scan) of a human heart showing ischaemia (reduced blood flow) following myocardial infarction,the death of a section of heart muscle following obstruction of a coronary artery - a heart attack. The image shows the uptake of a radio-isotope,Thallium-201,by the heart's muscle cells. Radioactive emissions recorded by the gamma camera are colour-coded to reveal a defect ("cold spot"),represented by the smaller red area at left - the red & white areas represent normal heart muscle. This form of "cold- spot" scanning is used to demonstrate ischaemia by comparing scans taken at rest & during exercise | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / CNRI |
Bildgröße: | 4509 px × 4016 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |