Positron Emission Tomography with 11-C-Methionine of Intracranial Tumours compared with Histology of Multiple Biopsies
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Patients with clinically suspected intracranial tumours are as a rule examined with computed tomography before and after intravenous injection of contrast medium. This is often sufficient to establish an accurate diagnosis especially in tumours which enhance after contrast injection. Expanding lesions which only lower the attenuation diffusely are much more difficult to delineate.