Test, Imaging and Diagnosis Terms
Laboratory tests, scans, examinations, screening methods, and diagnostic concepts. Browse definitions and meanings below.
Terms in this topic
Alphabetical order-
A questionnaire used to measure pain.
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A procedure in which cells are taken from the inside of the airways that lead to the lungs.
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A procedure in which a small amount of C-11 choline (a radioactive form of the vitamin choline) is injected into a vein.
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A test used to help diagnose a type of pancreatic tumor called an insulinoma.
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A test that measures the level of CA 19-9 in the blood.
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A test used to help diagnose a type of pancreatic islet cell tumor called a gastrinoma.
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The older name survives in speech, though modern scanners sweep in a spiral and the axial part of it no longer describes them.
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A CBC is often the first laboratory test ordered when evaluating unexplained fatigue, infection, bleeding, or bruising.
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A laboratory test to measure carcinoembryonic antigen (CEA), a substance that is sometimes found in an increased amount in the blood of people who have certain cancers.
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A chest x-ray uses a brief pulse of radiation to produce an image of the lungs, heart, and bones of the chest for evaluation.
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A scan that builds a walk-through view of the large bowel from x-ray slices, avoiding the camera but not the preparation.
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A plain x-ray flattens the body into one picture, while slicing it apart separates structures that would otherwise be stacked on top of each other.
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A series of detailed pictures of areas inside the body taken from different angles.
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The scanner captures no picture at all; it records absorption from thousands of angles, and the image is calculated afterward.
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Surgery to remove a cone-shaped piece of tissue from the cervix and cervical canal.
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A test that finds antibodies clinging invisibly to red cells, by adding a second antibody that clumps them into something visible.
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The removal of a tissue sample with a wide needle for examination under a microscope.
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The removal of a tissue sample with a wide needle for examination under a microscope.
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A series of detailed pictures of areas inside the body taken from different angles.
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The scan can find a growth but cannot remove or sample one, so anything suspicious still ends in a scope procedure.