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Hippocampus in Alzheimer's disease, DTI MRI scan
Coloured diffusion tensor imaging (DTI) magnetic resonance imaging (MRI) scan showing white matter fibres in the hippocampus of the brain in a patient with Alzheimer's disease. Alzheimer's is a neurodegenerative disease that is a common cause of dementia in the elderly. The hippocampus, which is responsible for long-term memory, is one of the first brain areas to be affected. Diffusion tensor imaging measures the direction of water diffusion, which in the brain reveals the orientation of nerve fibres. Red fibres have a left to right orientation, green a front to back orientation and blue an up and down orientation., by MARK AND MARY STEVENS NEUROIMAGING AND INFORMATICS INSTITUTE/SCIENCE PHOTO LIBRARY
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