10. 
    ultrasound
    <investigation> A type of imaging technique which uses high-frequency sound waves. ... This is highly operator-dependent and is thought to be useful in diagnosis but not particularly accurate in the assessment of tumour response. For the latter, CT or MR imaging are more accurate. ... (16 Dec ...
    Found op http://www.mondofacto.com/facts/dictionary?ultrasound
    
    
11. 
    ultrasound
    noun very high frequency sound; used in ultrasonography
    Found op http://wordnetweb.princeton.edu/perl/webwn?s=ultrasound
    
    
12. 
    ultrasound
    (ul´trә-sound) sound waves with a frequency greater than 20,000 Hz; used in medicine in the technique of ultrasonography. ultrasonography. a mechanical and thermal physical modality that uses sound waves of a frequency of approximately 1 million Hz for the treatment of soft tissue injury. It ...
    Found op http://www.encyclo.co.uk/local/21001
    
    
13. 
    ultrasound
    in medicine, the use of high-frequency sound (ultrasonic) waves to produce images of structures within the human body. Ultrasonic waves are sound ... [7 related articles]
    Found op http://www.britannica.com/eb/a-z/u/5
    
    
14. 
    Ultrasound
    Ultrasound is cyclic sound pressure with a frequency greater than the upper limit of human hearing. Ultrasound is thus not separated from "normal" (audible) sound based on differences in physical properties, only the fact that humans cannot hear it. Although this limit varies from person to person,...
    Found op http://en.wikipedia.org/wiki/Ultrasound
    
    
15. 
    ultrasound
    
    1. very high frequency sound; used in ultrasonography
    2. using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth
    
    Found op
    
    
16. 
    ultrasound
    acoustic oscillation whose frequency is above the high-frequency limit of audible sound (about 16 kHz)
    Found op http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=801-21-04
    
    
17. 
    ULTRASOUND
    a probe that uses high-frequency sound waves that pass into the body, are reflected back, to build an image of one's internal organs that is shown on a monitor
    Found op http://www.encyclo.co.uk/local/21166
    
    
18. 
    Ultrasound
    An imaging method that uses high-frequency sound waves to outline a part of the body. The sound wave echoes are picked up and displayed on a television screen. Ultrasounds can be performed externally or internally and can be used to date a pregnancy, determine the well-being of the fetus, determine ...
    Found op http://www.pregnology.com/AZ/U/1
    
    
19. 
    ultrasound
    ultrasound or sonography,in medicine, technique that uses sound waves to study and treat hard-to-reach body areas. In scanning with ultrasound, high-frequency sound waves are transmitted to the area of interest and the returning echoes recorded (for more detail, see ultrasonics). First developed in ...
    Found op http://www.infoplease.com/ce6/sci/A0849965.html
    
    
20. 
    Ultrasound
    An instrument is moved over the skin, sending and receiving ultrasound signals to make pictures of the kidneys and bladder. This is test is often used to measure the size of the kidneys.
    Found op http://www.kidney.org.au/KidneyDisease/KidneyGlossary/tabid/679/Default.xht
    
    
21. 
    ultrasound
    (US) Type: Term Pronunciation: ŭl′tră-sownd Definitions: 1. Sound having a frequency greater than 30,000 Hz.
    Found op http://www.medilexicon.com/medicaldictionary.php?t=95523
    
    
22. 
    ultrasound
    Pressure waves, known as ultrasonic waves, similar in nature to sound waves but occurring at frequencies above 20,000 Hz (cycles per second), the approximate upper limit of human hearing (15–16 Hz is the lower limit). Ultrasonics is concerned with the study and practical application of these pheno...
    Found op http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0002675.html
    
    

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