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-
The abbreviation is also written DXA, and the two forms name the same low-dose x-ray method for measuring bone mineral density.
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Ordered when fracture risk is in question, the test takes minutes, needs no injection, and uses a very small radiation dose.
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Seldom a single moment, a diagnosis is usually narrowed from a list of candidates and can stay provisional for a long time.
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A diagnostic mammogram is a focused breast x-ray obtained to evaluate a specific finding, distinct from a routine screening mammogram in an asymptomatic person.
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A specific test or series of steps done to help diagnose a disease or condition.
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A type of method or test used to help diagnose a disease or condition.
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A research study that evaluates methods of detecting disease.
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A number only means something when the next one is taken the same way, on the same machine, in the same plane.
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Capturing images on a sensor instead of film, which is what made routine clinical photography and remote review practical.
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Digital here means finger rather than electronic, and the reach of that finger is the main limitation of the whole examination.
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The standard bone density scan, and one that reports mineral spread across an area rather than through a true volume.
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A quick low-dose scan that turns bone strength into a single comparable number, and the measurement osteoporosis is defined by.
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Ten electrodes produce twelve views of the same heartbeat, each looking at the heart from a different direction.
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The number most often quoted from the study is ejection fraction, the share of blood the left ventricle pushes out with each beat.
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One of the few tests that watches the brain working moment by moment instead of photographing its structure.
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Quick, painless and available almost anywhere, it is usually the first test reached for when the heart is the question.
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electrocardiogram
/ ee-lek-troh-KAR-dee-oh-gram /A recording of the heart’s electrical activity from electrodes on the skin.
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The fact that decides everything is whether a wave carries enough energy to knock electrons out of atoms, making it ionizing.
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A procedure in which a sample of tissue is taken from the endometrium (inner lining of the uterus) for examination under a microscope.
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A procedure in which a probe that sends out high-energy sound waves is inserted into the rectum.