CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY
Brain tumour. Magnetic resonance imaging (MRI) scan of an axial section through a brain showing two small tumours (white dots, upper centre). The front of the brain is at right. The brain's ventricles (white), its fluid filled cavities, are at centre. It is not clear if the tumours are malignant or not. Surgical removal, radiotherapy or chemotherapy may be required. MRI scanners produce slice images of the body using radio signals and a magnetic field. The scans are useful in revealing brain tumours and in planning brain surgery.
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