Computed X-ray tomography (CT) scan of the brain showing a subarachnoid haemorrhage,the result of a ruptured blood vessel & one cause of stroke. The haemorrhage appears as the light area over the right side of the brain (left on image). 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 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Fraser, Simon |
Taille de l’image : | 4843 px × 3670 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |