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Fig. 3D —36-year-old man with asymmetric septal hypertrophic
cardiomyopathy and systolic anterior motion of the mitral valve. Steady-state
free precession images show displacement of the anterior mitral valve leaflet
into the left ventricular outflow tract (LVOT) accompanied by a high-velocity
spin dephasing jet into the LVOT. There is also a jet of mitral regurgitation
into a moderately enlarged left atrium. Note the area of high signal within
the LVOT on the four-chamber projection. This high signal is a result of high
velocities generated in the outflow tracts of patients with systolic anterior
motion.
