PISA velocity.systole:Vel:Pt:Mitral valve:Qn:US.2D+doppler
pisa velocity.systole:vel:pt:mitral valve:qn:us.2d+doppler
PISA velocity.systole:Vel:Pt:Mitral valve:Qn:US.2D+doppler
pisa velocity.systole:vel:pt:mitral valve:qn:us.2d+doppler