A – Flow artifact caused by mis-aligned view B – obstruction for SAM of mitral valve C – obstruction for aortic stenosis D – obstruction for subaortic membrane
Correct answer is B) : obstruction for SAM of mitral valve
Systolic anterior motion (SAM) is defined as displacement of the distal portion of the anterior leaflet of the mitral valve toward the left ventricular outflow tract obstruction. In cine sequences, it could be possible to see the flow artifact (caused by the obstruction) and the mitral leaflet motion. It is usually associated with Hypertrophic cardiomyopathy.
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