Blood velocity-time integral:Len:Pt:Pulmonary artery:Qn:US.doppler
blood velocity-time integral:len:pt:pulmonary artery:qn:us.doppler
Blood velocity-time integral:Len:Pt:Pulmonary artery:Qn:US.doppler
blood velocity-time integral:len:pt:pulmonary artery:qn:us.doppler