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[A new approach to arterial rigidity: ultrasonic tissue mode imaging]
J C Steinbach1, M I Saboya, F Le Bourg
1Laboratoire universitaire d'exploration vasculaire, Hôpítaux universitaires de Strasbourg, 67100 Strasbourg.
Archives Des Maladies Du Coeur Et Des Vaisseaux
|August 30, 2003
Summary
Tissue Doppler imaging (TDI) offers a simple method to assess carotid stiffness by measuring arterial wall velocity. This technique correlates well with established elasticity parameters, aiding cardiovascular risk evaluation.
Area of Science:
- Cardiovascular imaging
- Vascular biomechanics
Background:
- Vascular stiffness is a key factor in cardiovascular disease.
- Arterial wall velocity measured by Tissue Doppler imaging (TDI) may indicate vascular rigidity.
Purpose of the Study:
- To validate the use of TDI for assessing carotid artery stiffness.
Main Methods:
- TDI was used to measure maximum velocity (VMax) and mean acceleration (AccMax) of parietal motion.
- Measurements were corrected for arterial diameter and pulse pressure (VMax cor, AccMax cor).
- Data were compared with elasticity parameters derived from M-mode echography in 31 subjects.
Main Results:
- VMax showed a significant correlation with parietal velocity from M-mode echography (r = 0.77, p = 0.00002).
- VMax cor significantly correlated with distensibility, compliance, pulse wave velocity, Young's modulus, and beta coefficient.
Conclusions:
- TDI provides an easy and reliable method for evaluating carotid stiffness.
- This method correlates with established elasticity parameters and can aid in cardiovascular risk assessment.