Fig. 3. 2D parasternal short axis view of the heart at the level of the aortic valve. A: Standard parasternal short axis view of the heart at the level of the aortic valve. B: Color flow Doppler view of the pulmonary artery at the level of the aortic valve. Yellow box represents region of imaging for color Doppler. C: schematic of the 2D parasternal short axis view at the level of the aortic valve. D and E: Pulse wave Doppler imaging of pulmonic valve outflow. AV: aortic valve, PRVOT: proximal right ventricular outflow tract, PV: pulmonic valve, PA: pulmonary artery, DRVOT: distal right ventricular outflow tract, LA: left atrium, RA: right atrium, PAT: pulmonary acceleration time, PET: pulmonary ejection time, Vmax: peak pulmonary flow velocity, VTI: velocity time integral.
