However, because the aortoiliac bifurcation is perpendicular to the transducer, it is difficult to obtain reliable flow quantification with Doppler imaging. Imaging of endovascular flow patterns in the abdominal aorta is challenging but clinically relevant because of the relationship between local hemodynamics and the development of vascular diseases ( 1– 3).Ĭonventional Doppler US enables a one-dimensional blood flow velocity estimate in the axial direction.
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