Separated Flow Demonstrated by Digitized Cineangiography Compared With LDV

[+] Author and Article Information
Ö. Smedby

Department of Diagnostic Radiology, Uppsala University, Uppsala, Sweden

L. Fuchs

Department of Gas Dynamics, Institute of Technology and STC Group, ACIS, IBM Svenska AB, Stockholm, Sweden

N. Tillmark

Department of Gas Dynamics, Royal Institute of Technology, Stockholm, Sweden

J Biomech Eng 113(3), 336-341 (Aug 01, 1991) (6 pages) doi:10.1115/1.2894892 History: Received July 18, 1990; Revised January 30, 1991; Online March 17, 2008


In order to demonstrate separated flow in vivo, a method for the computerized analysis of cineangiographies has been developed, tested in vitro, and compared with LDV. A pulsatile flow was created in a glass model bifurcation, and velocity profiles were obtained with LDV at several phase angles. The flow was cinefilmed during contrast injection and the images were digitized. The computer then transformed the image sequence into parametric images representing arrival times of the contrast. The separation regions demonstrated with LDV were identified as areas with delayed contrast arrival. A preliminary analysis of a cineangiography in vivo is also included.

Copyright © 1991 by The American Society of Mechanical Engineers
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