CMA - CH 19 Key Terms - Diagnostic Imaging Flashcards
(26 cards)
bone densitometry
a radiographic procedure to measure the mineral concentration and structure of bone. Used primarily to diagnose osteoporosis.
cathode
negative electrode from which electrons are emitted.
claustrophobia
fear of being confined in any space
Doppler
non-invasive technique used with ultrasonography to evaluate blood flow through major arteries and veins of the arms, legs, and neck. It can reveal blood clots or blockages.
dosimeter
device for measuring x-ray output
echocardiogram
non-invasive diagnostic method that uses ultrasound to visualize internal cardiac structure, including valves.
fluoroscope
device consisting of a screen; mounts separately or with an x-ray tube that shows the images of objects interposed between the table and the screen.
implantable cardioverter-defibrillator (ICD)
implantable device used for life-threatening arrhythmias. Shocks the heart out of the arrhythmia and into a more normal sinus rhythm.
ionizing radiation
X-ray beams
isotopes
a chemical element
magnetic resonance imaging (MRI)
method of medical imaging that measures the response of tissues to a magnetic field and radio waves resulting in images of tissues and organs of the body.
mammogram
Radiographic technique that allows imaging of the breast tissue to evaluate for abnormalities.
noninvasive
procedure that does not require penetrating the skin or a body opening.
oscilloscope
electronic device used for recording electrical activity of the heart, brain, and muscular tissues
osteoporosis
thinning of long bones, pelvic bones, and vertebrae.
palliative
refers to measures taken to relieve symptoms of disease.
positron emission tomography (PET)
radiographic procedure that uses a computer and a radioactive substance. The substance is injected into the patient’s body and gives off charged particles. They combine with particles in patient’s body to produce color images that reveal the amount of etabolic activity in an organ or structure.
radioactive
emits rays or particles from nucleus
radiographs
film on which an image is produced through exposure to x-rays
radiolucent
allowing x-rays to pass through. A dark area appears on the radiograph.
radionuclides
atoms that disintegrate by emitting electromagnetic radiation.
radiopaque
impenetrable to x-rays. A light area appears on the radiograph.
radiopharmaceuticals
radioactive chemicals used in testing the location, size, outline, or function of tissue, organs, vessels, or body fluids.
stomatitis
inflammation of the mouth associated with chemotherapy. Can include swelling, redness, halitosis, and ulcerations.
