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An x-ray device linked to a computer that produces an image of a predetermined cross-section of the brain. A special dye material may be injected into the patient’s vein prior to the scan to help make any abnormal tissue more evident. Computed tomography, also...
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Abnormal sacs containing gas, fluid, or a semisolid material, with a membranous lining. A closed sac having a distinct membrane and developing abnormally in a body cavity or structure. Arachnoid cysts are cerebrospinal fluid-filled sacs that are located between the...
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Relating to or producing a toxic effect on cells. Capable of killing cells. Cytotoxic chemotherapy is the anticancer drugs that kill cells, especially cancer cells. Cytotoxic T cell is a type of white blood cell that can directly destroy specific cells. T cells can be...
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A surgical procedure to decrease mass effect by removing a portion of a tumor or dead tissue. See mass effect. Surgical removal of as much of a tumor as possible. Debulking may increase the chance that chemotherapy or radiation therapy will kill all the tumor cells....
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Dexamethasone. A glucocorticosteroid medication used to reduce brain tissue swelling. Also used, in low doses, to treat adrenal insufficiency.
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Refers to a surgical procedure during which bone, tissue, or tumor is removed to lessen intracranial pressure. Decompressive craniectomy is an advanced treatment option for intracranial pressure (ICP) control in patients with traumatic brain injury.
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A mature cell returning to a less mature state. See differentiate, undifferentiated. In cancer, refers to how mature (developed) the cancer cells are in a tumor. Differentiated tumor cells resemble normal cells and tend to grow and spread at a slower rate than...
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See drug delivery.
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The amount of darkness or light in an area of a scan reflects the compactness and density of tissue. The amount of darkness or light in an area of a scan reflects the compactness and density of tissue. Differences in tissue density are the basis for CT and MR...
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Dual-energy X-ray absorptiometry. A technique used to measure bone mineral density, but which can also be used to measure body composition. Dual Energy X-Ray Absorptiometry (DEXA) is a test that uses x-rays to measure the thickness of the bones in the hip, spine,...
