Non‐invasive measurement of pulsatile vessel diameter change and elastic properties in human arteries: a methodological study,
- 1 November 1993
- journal article
- Published by Wiley in Clinical Physiology and Functional Imaging
- Vol. 13 (6), 631-643
- https://doi.org/10.1111/j.1475-097x.1993.tb00478.x
Abstract
Summary. A recently developed ultrasound phase-locked echo-tracking system makes it possible to measure non-invasive pulsatile vessel diameter changes, and, in combination with blood-pressure measurement, to calculate pressure strain elastic modulus (Ep) and stiffness (β). The reproducibility in measurements of pulsatile diameter changes with this system was evaluated. Also the precision of indirect blood-pressure measurements, as compared to the simultaneously measured intra-arterial blood pressure was tested. The resulting reproducibility in pressure strain elastic modulus (Ep) and stiffness (β) was evaluated. Intra-observer variabilities in measuring pulsatile diameter changes were 16% for the abdominal aorta, 10% for the common carotid artery, and 15% for the common femoral artery, respectively. Intra-observer variabilities for Ep and β were 21% for both in the abdominal aorta, 17% for both in the common carotid artery, and 18% for both in the common femoral artery, respectively. There were only small differences in indirect and direct measurement of systolic blood pressure, whereas indirect blood pressure measurement systematically overestimated the diastolic blood pressure, on average by 20%. The variabilities in indirect blood pressure measurements were 2% for the systolic and 3% for the diastolic blood pressure, respectively. Inter-observer variability in the investigation of the common carotid artery was 10% for the pulsatile diameter changes, and 21% and 23% for Ep and β, respectively. Thus, the echo-tracking system represents a reliable system for estimation of pressure strain elastic modulus and stiffness. However, Ep and β are systematically underestimated by 25–30%, when used in combination with indirect blood pressure measurements.Keywords
This publication has 21 references indexed in Scilit:
- Noninvasive measurement of diameter changes in the distal abdominal aorta in manJapanese Journal of Clinical Oncology, 1992
- Comparison of intravascular ultrasound, external ultrasound and digital angiography for evaluation of peripheral artery dimensions and morphologyThe American Journal of Cardiology, 1991
- Calculation of pulse-wave velocity using cross correlation—Effects of reflexes in the arterial treeJapanese Journal of Clinical Oncology, 1991
- Aortic and large artery stiffness: Current methodology and clinical correlationsClinical Cardiology, 1990
- The function of the aorta in ischemic heart disease: A magnetic resonance and angiographic study of aortic compliance and blood flow patternsAmerican Heart Journal, 1989
- Non-invasive assessment of the age related changes in stiffness of major branches of the human arteriesCardiovascular Research, 1987
- Transient ischaemic attacks: The static and dynamic morphology of the carotid artery bifurcationBritish Journal of Surgery, 1982
- The mechanical properties of exposed human common carotid arteries in vivoBasic Research in Cardiology, 1979
- HemodynamicsAnnual Review of Physiology, 1974