A brain tumor is a mass or growth of abnormal cells in brain or close to the brain . MRI is commonly used to help diagnose brain tumors. MRI also can be used to measure the tumor’s size.
A number of specialized MRI scan components — including functional MRI, perfusion MRI and magnetic resonance spectroscopy — may help the doctor evaluate the tumor and plan treatment. A special dye called a contrast medium is given before the scan to create a clearer picture . This dye can be injected into a patient’s vein or given as a pill to swallow . MRIs create more detailed pictures than CT scans and are the preferred way to diagnose a brain tumor. The MRI may be of the brain, spinal cord, or both, depending on the type of tumor suspected and the likelihood that it will spread in the CNS. There are different types of MRI . The results of a neuro-examination, done by the internist or neurologist, helps determine which type of MRI to use.
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