Echocardiography Health Article
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What are the Various Diagnostic Imaging Tests?
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ORGANIZATIONS
American Heart Association. 7320 Greenville Ave. Dallas, TX 75231. (214) 373-6300. <http://www.americanheart.org>.
National Heart, Lung and Blood Institute. PO Box 30105, Bethesda, MD 20824-0105. (301) 251-1222. <http://www.nhlbi.nih.gov>.
Robert Scott Dinsmoor
KEY TERMS
Noninvasive—Pertaining to a diagnostic procedure or treatment that does not require the skin to be broken or a body cavity to be entered.
Regurgitation—Backward flow of blood through a partly closed heart valve.
Transducer—A device that converts electrical signals into ultrasound waves and ultrasound waves back into electrical impulses.
Ultrasound—Sound waves at a frequency of over 20, 000 kHz, often used for diagnostic imaging.
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Author Info: Robert Scott Dinsmoor, The Gale Group Inc., Gale, Detroit, Gale Encyclopedia of Medicine, 2002 |
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