In-vivo velocity profiles were recorded with a 20 MHz, 80-channel pulsed Doppler ultrasound velocimeter in canine end-to-side ilio-femoral anastomotic grafts. The geometries were obtained from casts of the anastomotic region, and flow rates were measured with electromagnetic flow probes. Three cases reported here include a “standard” geometry, which was similar to previously studied in vitro models, a stenosed geometry, and a case with below average flow rate. Observed flow features include separation at the hood and toe, movement of the floor stagnation point, and skewed profiles in the proximal outflow segment. Out-of-plane curvature and lateral displacement of the anastomosis inlet appear to have a strong effect on the flow fields. In addition, compliance affects the instantaneous flow rates within the proximal and distal branches.
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February 1997
Technical Papers
In-Vivo Measurements of Blood Flow Velocity Profiles in Canine Ilio-Femoral Anastomotic Bypass Grafts
S. A. Jones,
S. A. Jones
Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21218
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D. P. Giddens,
D. P. Giddens
Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218
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F. Loth,
F. Loth
Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21218
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C. K. Zarins,
C. K. Zarins
Department of Surgery, Stanford University, Stanford, CA 94305-5450
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F. Kajiya,
F. Kajiya
Medical Engineering and Systems Cardiology, Kawasaki Medical School, Kurashiki City, Japan
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I. Morita,
I. Morita
Medical Engineering and Systems Cardiology, Kawasaki Medical School, Kurashiki City, Japan
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O. Hiramatsu,
O. Hiramatsu
Medical Engineering and Systems Cardiology, Kawasaki Medical School, Kurashiki City, Japan
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Y. Ogasawara,
Y. Ogasawara
Medical Engineering and Systems Cardiology, Kawasaki Medical School, Kurashiki City, Japan
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K. Tsujioka
K. Tsujioka
Medical Engineering and Systems Cardiology, Kawasaki Medical School, Kurashiki City, Japan
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S. A. Jones
Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21218
D. P. Giddens
Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218
F. Loth
Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21218
C. K. Zarins
Department of Surgery, Stanford University, Stanford, CA 94305-5450
F. Kajiya
Medical Engineering and Systems Cardiology, Kawasaki Medical School, Kurashiki City, Japan
I. Morita
Medical Engineering and Systems Cardiology, Kawasaki Medical School, Kurashiki City, Japan
O. Hiramatsu
Medical Engineering and Systems Cardiology, Kawasaki Medical School, Kurashiki City, Japan
Y. Ogasawara
Medical Engineering and Systems Cardiology, Kawasaki Medical School, Kurashiki City, Japan
K. Tsujioka
Medical Engineering and Systems Cardiology, Kawasaki Medical School, Kurashiki City, Japan
J Biomech Eng. Feb 1997, 119(1): 30-38 (9 pages)
Published Online: February 1, 1997
Article history
Received:
August 29, 1995
Revised:
April 4, 1996
Online:
October 30, 2007
Citation
Jones, S. A., Giddens, D. P., Loth, F., Zarins, C. K., Kajiya, F., Morita, I., Hiramatsu, O., Ogasawara, Y., and Tsujioka, K. (February 1, 1997). "In-Vivo Measurements of Blood Flow Velocity Profiles in Canine Ilio-Femoral Anastomotic Bypass Grafts." ASME. J Biomech Eng. February 1997; 119(1): 30–38. https://doi.org/10.1115/1.2796061
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