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Artifacts in a nutshell 👽👾
A Tweetorial...
Dedicated to @bcostelloMD, @RezaEmaminia & all the great #FITs stressed out by #EchoBoards @ASE360 #carrotsquad
Images and some of the content from Bertrand, et al. JASE 2016;29:381-91. onlinejase.com/article/S0894-…
A Tweetorial...
Dedicated to @bcostelloMD, @RezaEmaminia & all the great #FITs stressed out by #EchoBoards @ASE360 #carrotsquad
Images and some of the content from Bertrand, et al. JASE 2016;29:381-91. onlinejase.com/article/S0894-…
Ultrasound waves need a media to travel. Our tissues are that media. All tissues have different acoustic impedances. Air, fat, water, blood, muscle, bone listed in increasing impedance. Always there will be reflected & refracted waves as it traverses different tissue layers. 
Remember that the way the US distributes the waves in a phased array probe is similar to a folding fan, so reflection (rebound) & refraction (change in direction) occurs across the sector width (Triangle area where you see the images) look at panel B of above figure.
