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Noninvasive assessment of wall-shear rate and vascular elasticity using combined ARFI/SWEI/spectral Doppler imaging system.

Publication ,  Journal Article
Dumont, DM; Doherty, JR; Trahey, GE
Published in: Ultrasonic imaging
July 2011

The progression of atherosclerotic disease is a complex process believed to be a function of the localized mechanical properties and hemodynamic loading associated with the arterial wall. It is hypothesized that measurements of cardiovascular stiffness and wall-shear rate (WSR) may provide important information regarding vascular remodeling, endothelial function and the growth of soft lipid-filled plaques that could help a clinician better predict the occurrence of clinical events such as stroke. Two novel ARFI based imaging techniques, combined on-axis/off-axis ARFI/Spectral Doppler Imaging (SAD-SWEI) and Gated 2D ARFI/Spectral Doppler Imaging (SAD-Gated), were developed to form co-registered depictions of B-mode echogenicity, ARFI displacements, ARF-excited transverse wave velocity estimates and estimates ofwall-shear rate throughout the cardiac cycle. Implemented on a commercial ultrasound scanner, the developed techniques were evaluated in tissue-mimicking and steady-state flow phantoms and compared with conventional techniques, other published study results and theoretical values. Initial in vivo feasibility of the method is demonstrated with results obtained from scanning the carotid arteries of five healthy volunteers. Cyclic variations over the cardiac cycle were observed in on-axis displacements, off-axis transverse-wave velocities and wall-shear rates.

Duke Scholars

Published In

Ultrasonic imaging

DOI

EISSN

1096-0910

ISSN

0161-7346

Publication Date

July 2011

Volume

33

Issue

3

Start / End Page

165 / 188

Related Subject Headings

  • Vascular Resistance
  • Ultrasonography, Doppler
  • Shear Strength
  • Pulsatile Flow
  • Phantoms, Imaging
  • Middle Aged
  • Male
  • Image Processing, Computer-Assisted
  • Humans
  • Hemorheology
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Dumont, D. M., Doherty, J. R., & Trahey, G. E. (2011). Noninvasive assessment of wall-shear rate and vascular elasticity using combined ARFI/SWEI/spectral Doppler imaging system. Ultrasonic Imaging, 33(3), 165–188. https://doi.org/10.1177/016173461103300302
Dumont, Douglas M., Joshua R. Doherty, and Gregg E. Trahey. “Noninvasive assessment of wall-shear rate and vascular elasticity using combined ARFI/SWEI/spectral Doppler imaging system.Ultrasonic Imaging 33, no. 3 (July 2011): 165–88. https://doi.org/10.1177/016173461103300302.
Dumont, Douglas M., et al. “Noninvasive assessment of wall-shear rate and vascular elasticity using combined ARFI/SWEI/spectral Doppler imaging system.Ultrasonic Imaging, vol. 33, no. 3, July 2011, pp. 165–88. Epmc, doi:10.1177/016173461103300302.
Journal cover image

Published In

Ultrasonic imaging

DOI

EISSN

1096-0910

ISSN

0161-7346

Publication Date

July 2011

Volume

33

Issue

3

Start / End Page

165 / 188

Related Subject Headings

  • Vascular Resistance
  • Ultrasonography, Doppler
  • Shear Strength
  • Pulsatile Flow
  • Phantoms, Imaging
  • Middle Aged
  • Male
  • Image Processing, Computer-Assisted
  • Humans
  • Hemorheology