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#FITSurvivalGuide 1/10 Tweetorial on MR. From JASE April 2017. This is an extensive topic, and a tweetorial will not do justice, so highly recommend to read this article. @ASE360 @ACCCardioEd @newmexicoacc #echoboards
MR can be 1’ or 2’. Simplified version: 1’ MR d/t pathology of the valve itself. 2’ MR = MV apparatus is intact, w/ ventricular disease (LV dilatation) dilated MV annulus to  MV leaflets malcoaptation MR (~central jet). Also useful to use Carpentier classification.
Determine the scallops. First heard from @MayoClinicCV: 2 steps
1.At 0 deg: Determine if ant or post leaflet abn
2.At 60 deg: Determine which scallop 1,2, or 3
Pic from J Am Soc Echocardiogr 2013;26:921-64
Read 10 tweets
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.…
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.
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