Alzheimer's disease. Coloured Positron Emission Tomography (PET) scans of the brain of a normal patient (left) versus an Alzheimer's disease patient. Horizontal brain sections are seen. Colour-coding: high brain activity (red and yellow); low activity (blue and black). The scan on the right shows reduction of both function and blood flow in both sides of the brain,a feature often seen in Alzheimer's. Alzheimer's disease is a major cause of dementia in the elderly. To obtain the PET scans a radioactive tracer is injected into the blood to reveal metabolic activity in the brain | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Friedland, Dr. Robert |
Bildgröße: | 4441 px × 3197 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |