PMID: 8964783Apr 1, 1996Paper

MR measurement and numerical simulation of steady flow in an end-to-side anastomosis model

Journal of Biomechanics
D A SteinmanC R Ethier

Abstract

Magnetic resonance phase contrast velocity imaging ('MR PC velocimetry') is a powerful tool for measuring blood velocity. While it has been demonstrated that MR PC velocimetry can accurately measure velocity profiles in simple, unidirectional flows, errors can arise when measuring the more complex, multidirectional flows of clinical importance. In this work, we have compared MR PC velocity measurements with numerical simulations of steady flow in a physiologically relevant model of an end-to-side anastomosis, which produces many of the complex flow features expected in vivo. MR PC velocity profiles, measured using both 2D and 3D pulse sequences, showed very good agreement with numerically computed profiles, although at 2D PC data showed slightly larger errors than the 3D PC data in regions of high accelerations and oblique flow, likely due to displacement artifacts. We conclude that, under ideal conditions, MR phase contrast velocimetry can measure complex flow patterns to within 15% accuracy, but that care should be taken when using 2D pulse sequences to measure such complex flows.

References

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Citations

Dec 18, 2001·Journal of Magnetic Resonance Imaging : JMRI·Y PapaharilaouS J Sherwin
Mar 1, 1997·Journal of Magnetic Resonance Imaging : JMRI·D A SteinmanB K Rutt
May 5, 2005·Annals of Biomedical Engineering·Joy P KuCharles A Taylor
Oct 31, 1998·Journal of Biomechanics·C R EthierM Ojha
Aug 21, 2002·Computer Methods in Biomechanics and Biomedical Engineering·D J DoorlyJ Peiró
Aug 21, 2002·Computer Methods in Biomechanics and Biomedical Engineering·D Kim Stangeby, C Ross Ethier
May 9, 2001·Journal of Biomechanical Engineering·S Prakash, C R Ethier
Dec 3, 2008·Journal of Biomechanical Engineering·Qian-Qian WangWen Wang
May 3, 2000·Journal of Biomechanical Engineering·S J SherwinC L Dumoulin
Sep 28, 2007·Biomedical Engineering Online·Thomas FrauenfelderHatem Alkadhi
Jul 15, 2011·Journal of Biomechanics·Umberto MorbiducciFranco M Montevecchi
Apr 7, 2007·Medical Engineering & Physics·Johannes V SoulisGeorge E Louridas
Aug 14, 1998·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·M H Buonocore
Aug 31, 2007·Journal of Magnetic Resonance Imaging : JMRI·Longchuan LiAndreas Anayiotos
Sep 15, 2005·ASAIO Journal : a Peer-reviewed Journal of the American Society for Artificial Internal Organs·Mounter C Y ChenNed H C Hwang
Oct 3, 1999·Journal of Magnetic Resonance Imaging : JMRI·R F SmithD W Holdsworth
Mar 30, 2000·Journal of Magnetic Resonance Imaging : JMRI·Q LongA V Stanton

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