DR M O HABERT,PITIE-SALPETRIERE, ISM / SCIENCE PHOTO LIBRARY DR M O HABERT,PITIE-SALPETRIERE, ISM / SCIENCE PHOTO LIBRARY
Degenerative brain disease. Coloured single photon emission computed tomography (SPECT) scans of axial sections through the brain of a patient with striatonigral degeneration (SND). SND is a neurodegenerative disease, similar to Parkinson's, that may be present in multisystem atrophy. The scans show areas of neuronal loss (blue and black) at the front of the brain (top). This leads to the symptoms, which include; muscular rigidity, unstable posture, urinary problems, tremor and depression. There is no cure and drugs only alleviate symptoms in the short term. SPECT scans use gamma cameras to detect radioactive tracers, injected into the blood, that accumulate in areas of high metabolic activity.
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