Transcription of Recommendations for Quantification of Doppler ...
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Recommendations for Quantification of Doppler ...
167 INTRODUCTIOND oppler echocardiography is a noninvasive tech-nique that provides unique hemodynamic informa-tion otherwise not available without invasive accuracy of the results depends, however,on meticulous technique and an understanding ofDoppler principles and flow dynamics. This docu-ment provides Recommendations based on the sci-entific literature and a consensus from a body ofexperts to guide the recording and measurement ofDoppler document is not a comprehensivereview of all the clinical applications of PRINCIPLESThe Doppler principle states that the frequency ofreflected ultrasound is altered by a moving target,such as red blood magnitude of thisDoppler shift relates to the velocity of the bloodcells, whereas the polarity of the shift reflects thedirection of blood flow toward (positive) or away(negative) from the transducer.
called tissue Doppler and can be performed in the PW or the color mode.A comprehensive discussion of this new technology is beyond the scope of this
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