echocardiography [ek΄ō kär΄dē äg′rə fē]n.pl. echocardiographiesa technique for examining the internal structure of the heart, using reflections from high-frequency sound waves to form a picture or display (echocardiogram)echocardiographic [ek΄o car΄dē ə graf′ik]adj.echocardiology [ek΄ō kär΄dē äl′ə jē]n.
* * *See echocardiographic.
* * *▪ medicinediagnostic technique that uses ultrasound (high-frequency sound waves) to produce an image of the internal structures of the heart. A piezoelectric transducer placed on the surface of the chest converts electrical impulses into a narrow ultrasonic beam that penetrates body tissues but is reflected off surfaces where a change in tissue density occurs. The reflected sound waves are detected by a receiver also placed on the chest, transformed back into electrical impulses, and projected on the screen of a cathode-ray oscilloscope. Echoes from varied depths produce an image of the walls and valves of the heart and of their motions. Such information can aid in diagnosing valve disease, congenital heart defects, and other cardiac abnormalities.
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Echocardiography — is a diagnostic test which uses ultrasound waves to make images of the heart chambers, valves and surrounding structures. It can measure cardiac output and is a sensitive test for inflammation around the heart (pericarditis). It can also be used… … Medical dictionary
echocardiography — [ek΄ō kär΄dē äg′rə fē] n. pl. echocardiographies a technique for examining the internal structure of the heart, using reflections from high frequency sound waves to form a picture or display (echocardiogram) echocardiographic [ek΄o car΄dē ə… … English World dictionary
Echocardiography — An echocardiogram is a sonography of the heart. Also known as a cardiac ultrasound, it uses standard ultrasound techniques to image two dimensional slices of the heart. The latest ultrasound systems now employ 3D real time imaging.In addition to… … Wikipedia
echocardiography — n. the use of ultrasound waves to investigate and display the action of the heart as it beats. Used in the diagnosis and assessment of congenital and acquired heart diseases, it is safe, painless, and reliable and reduces the need for cardiac… … The new mediacal dictionary
echocardiography — noun (plural phies) Date: 1965 the use of ultrasound to examine the structure and functioning of the heart for abnormalities and disease • echocardiographer noun • echocardiographic adjective … New Collegiate Dictionary
echocardiography — noun The use of ultrasound to produce images of the heart See Also: echocardiogram, echocardiograph … Wiktionary
echocardiography — n. (Medicine) examination of the heart using ultrasound … English contemporary dictionary
echocardiography — [ˌɛkəʊkα:dɪ ɒgrəfi] noun Medicine the use of ultrasound waves to investigate the action of the heart. Derivatives echocardiogram noun echocardiograph noun echocardiographic adjective … English new terms dictionary
echocardiography — echo·cardiography … English syllables
echocardiography — A procedure that uses ultrasonic waves directed over the chest wall to obtain a graphic record of the heart s position, motion of the walls, or internal parts such as the valves … English dictionary of cancer terms