Comparison of echotracking and magnetic resonance assessment of abdominal aorta distensibility and relationships with pulse wave velocity

Cristina Giannattasio, Francesca Cesana, Silvia Maestroni, Alessandra Salvioni, Alessandro Maloberti, Stefano Nava, Matteo Cairo, Fabiana Madotto, Filippo Zerboni, Sandro Sironi, Guido Grassi, Giuseppe Mancia

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)1970-1976
Number of pages7
JournalUltrasound in Medicine and Biology
Volume37
Issue number12
DOIs
Publication statusPublished - Dec 2011

Keywords

  • Aorta
  • Arterial distensibility
  • Arterial stiffness
  • Magnetic resonance
  • Pulse wave velocity
  • Ultrasound

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology
  • Biophysics

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