AAo VTI
From the suprasternal notch window, obtain a long axis image of the aortic arch. You may need to adjust your image to obtain optimal imaging of the ascending aorta. Align a pulsed Doppler cursor with the sample volume in the ascending aorta.
DAo VTI
From the suprasternal notch window, obtain a long axis image of the aortic arch. You may need to adjust your image to obtain optimal imaging of the descending aorta. Align a pulsed Doppler cursor with the sample volume in the descending aorta.