Blood Flow in an Aortic Bifurcation Model: Pulsed Doppler Ultrasound and Laser Doppler Anemometry Studies

대동맥분기에서의 혈액유동: 맥도플러초음파 및 레이저도플러계측기를 사용한 연구

$\underline{In\;vitro}$ velocity measurements were made using both the pulsed Doppler ultrasound (PDU) machine and laser Doppler anemometer (LDA) system in order to investigate the flow characteristics near the aortic bifurcation. Velocities measured from the PDU machine was in good agreement with those from the LDA. The flow in the daughter branches was three-dimensional with a secondary flow. The oscillating wall shear stress with this secondary fluid motion is well correlated with the localization of the atherosclerosis.