DR M O HABERT, PITIE-SALPETRIERE, ISM / SCIENCE PHOTO LIBRARY DR M O HABERT, PITIE-SALPETRIERE, ISM / SCIENCE PHOTO LIBRARY
Mesulam's syndrome. Coloured single photon emission computed tomography (SPECT) scans of axial sections through the brain of a patient with Mesulam's syndrome. This is a deterioration of the frontal and temporal lobes, especially on the left side (right), the area associated with language. It causes aphasia, a loss of ability to articulate ideas or comprehend spoken or written language. Patients eventually become mute. The scans show areas of low blood flow (blue and black) around the frontal and temporal (sides of the brain) lobes. There is no cure for the condition. 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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