CT scan of the brain

CT scan of the brain

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Credit: SIMON FRASER/SCIENCE PHOTO LIBRARY

Caption: Computed X-ray tomography (CT) scan of the brain of a man aged 67 years, showing a large brain tumour in the left side of the brain (right side of image). The tumour appears as the dark, roughly circular region. In CT, a narrow X-ray beam is directed through the subject towards a diametrically-opposed detector. A series of "slices" is made, with source & detector moving synchronously around the subject. Measurements of transmitted X-rays are processed by computer to reveal how elements of tissue in each "slice" attenuate X-rays - the basis for constructing the image. Courtesy of Radiography Dept., Royal Victoria Infirmary, Newcastle-upon-Tyne.

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Keywords: brain tumour, cancer imaging, cancerous, condition, ct scan, disease, disorder, healthcare, image, malignancy, malignant, medical, medicine, neuroimaging

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