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Fig. 3A —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.