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The transducer may be used in contact with the skin, as in fetal ultrasound imaging, or inserted into a body opening such as the rectum or vagina. Clinicians who perform ultrasound-guided procedures often use a probe positioning system to hold the ultrasonic transducer. [9] Compared to other medical imaging modalities, ultrasound has several ...
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By changing the pulse delays, the computer can scan the beam of ultrasound in a raster pattern across the tissue. Echoes reflected by different density tissue, received by the transducers, build up an image of the underlying structures. Weld examination by phased array. TOP: The phased array probe emits a series of beams to flood the weld with ...
Resonant ultrasound spectroscopy (RUS) is a laboratory technique used in geology and material science to measure fundamental material properties involving elasticity. This technique relies on the fact that solid objects have natural frequencies at which they vibrate when mechanically excited.
UOTW_1_-_Ultrasound_of_the_Week_1.webm (WebM audio/video file, VP8, length 6.9 s, 792 × 470 pixels, 1 Mbps overall, file size: 847 KB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Sound from ultrasound is the name given here to the generation of audible sound from modulated ultrasound without using an active receiver. This happens when the modulated ultrasound passes through a nonlinear medium which acts, intentionally or unintentionally, as a demodulator .
Elazer R. Edelman is an American engineer, scientist and cardiologist. He is the Edward J. Poitras Professor in Medical Engineering and Science at the Massachusetts Institute of Technology (MIT), Professor of Medicine at Harvard Medical School and at Brigham and Women's Hospital (BWH), and a practicing cardiologist at BWH.
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