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Stanford Hospital & Clinics: Brain Tumor Diagnosis
Magnetic resonance imaging (MRI) and computed tomography (CT) scans are two of the neuroimaging techniques used most often to examine brain tumors. When a tumor is present, MRI or CT scans will almost always show it and can often tell the doctors exactly where the tumor is in the brain. They can also help indicate its severity. Imaging tests are sometimes repeated after treatment to measure improvement.