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Comparison of Echotracking and Magnetic Resonance Assessment of Abdominal Aorta Distensibility and Relationships with Pulse Wave Velocity.
MedLine Citation:
PMID:  22033135     Owner:  NLM     Status:  Publisher    
Arterial distensibility can be measured either by echotracking or by nuclear magnetic resonance (MRI). Little information, however, is available on the comparison between the two methods and on the relationships between the results obtained with the two approaches and the arterial stiffness gold standard measurement, i.e., pulse wave velocity (PWV). In 28 normotensive subjects (age 33.0 ± 10.4 years, mean ± SD) we measured aortic diameter 1 cm above iliac bifurcation, aortic pulse pressure by tonometry and calculated arterial distensibility via the Reneman formulae for both methods. Aortic diameter and aortic distensibility were not superimposable and higher values were systematically detected with the MRI approach than with the ultrasound one. However, PWV showed a significant correlation with aortic distensibility values obtained by both methods (r = 0.50 and r = 0.49, p < 0.05). These data provide evidence that MRI-measured distensibility value is higher than that obtained via echotracking. The significant correlation with PWV, however, suggests that both methods can be regarded as valuable approaches. Considering the greater economic cost and the lower availability in daily clinical and research practice of MRI, echotracking ultrasonography can be regarded as a reliable and feasible method to assess aortic distensibility.
Cristina Giannattasio; Francesca Cesana; Silvia Maestroni; Alessandra Salvioni; Alessandro Maloberti; Stefano Nava; Matteo Cairo; Fabiana Madotto; Filippo Zerboni; Sandro Sironi; Guido Grassi; Giuseppe Mancia
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-10-25
Journal Detail:
Title:  Ultrasound in medicine & biology     Volume:  -     ISSN:  1879-291X     ISO Abbreviation:  -     Publication Date:  2011 Oct 
Date Detail:
Created Date:  2011-10-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0410553     Medline TA:  Ultrasound Med Biol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 World Federation for Ultrasound in Medicine & Biology. Published by Elsevier Inc. All rights reserved.
Clinica Medica, Milano Bicocca University and S.Gerardo Hospital, Monza, Italy; Istituto Auxologico Italiano, Milano, Italy.
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