Coloured scintigram of cerebral vasculitis in AIDS

Coloured scintigram of cerebral vasculitis in AIDS

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Credit: PUBLIPHOTO DIFFUSION/SCIENCE PHOTO LIBRARY

Caption: Cerebral vasculitis in AIDS. Coloured scintigram showing a horizontal section through the brain of an AIDS patient with cerebral vasculitis and ischaemia. White and red show areas of high radio- activity (normal tissue); blue and black show low radioactivity, due to lack of blood. The affected area is at the front of the brain (upper left). Vasculitis is caused by tiny bodies called immune complexes, which consist of viral material bound to antibodies. The immune complexes stick to blood vessel walls, causing inflammation and narrowing. The affected area is deprived of blood (ischaemia) and may die. The radioactive tracer used to obtain this image of the brain was technetium (99mTc).

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Keywords: acquired immune deficiency, aids, brain, cerebral, cerebral vasculitis, condition, disease, disorder, gamma, healthcare, ischaemia, medical, medicine, scintigram, scintigrm, syndrome, vasculitis

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