Estimation of local aortic elastic properties with MRI.

Details

Serval ID
serval:BIB_7543E3A2EAAA
Type
Article: article from journal or magazin.
Collection
Publications
Title
Estimation of local aortic elastic properties with MRI.
Journal
Magnetic Resonance in Medicine
Author(s)
Vulliémoz S., Stergiopulos N., Meuli R.
ISSN
0740-3194 (Print)
ISSN-L
0740-3194
Publication state
Published
Issued date
04/2002
Peer-reviewed
Oui
Volume
47
Number
4
Pages
649-654
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
Aortic compliance and pulse wave velocity (PWV) are important determiners of heart load, and are clinically useful indices of cardiovascular risk. Most direct methods to derive them require invasive pressure measurement. In this work a noninvasive technique to evaluate aortic compliance and PWV using MRI is proposed. MRI magnitude and phase images to measure area and flow in the ascending aorta were acquired in a group of 13 young healthy subjects. Assuming that the early systolic part of the wave was unidirectional and reflectionless, PWV was determined as the ratio between flow and area variations at early systole. Our results were compared to pulse wave velocities derived from a direct transit time, and to one using ascending aortic area and peripheral brachial pulse pressure. The new method proved to be accurate and in good agreement with the transit time method, as well as with previously published results.
Keywords
Adult, Aorta/anatomy & histology, Aorta/physiology, Female, Humans, Magnetic Resonance Imaging/methods, Male, Middle Aged, Pulsatile Flow/physiology, Vascular Resistance/physiology
Pubmed
Web of science
Create date
08/04/2008 14:48
Last modification date
20/08/2019 14:32
Usage data