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In vivo cardiac, acoustic-radiation-force-driven, shear wave velocimetry.

Publication ,  Journal Article
Bouchard, RR; Hsu, SJ; Wolf, PD; Trahey, GE
Published in: Ultrasonic imaging
July 2009

Shear wave elasticity imaging (SWEI) was employed to track acoustic radiation force impulse (ARFI)-induced shear waves in the mid-myocardium of the left ventricular free wall (LVFW) of a beating canine heart. Shear waves were generated and tracked with a linear ultrasound transducer that was placed directly on the exposed epicardium. Acquisition was ECG-gated and coincided with the mid-diastolic portion of the cardiac cycle. Axial displacement profiles consistent with shear wave propagation were clearly evident in all SWEI acquisitions (i.e., those including an ARFI excitation); displacement data from control cases (i.e., sequences lacking an ARFI excitation) offered no evidence of shear wave propagation and yielded a peak absolute mean displacement below 0.31 microm after motion filtering. Shear wave velocity estimates ranged from 0.82 to 2.65 m/s and were stable across multiple heartbeats for the same interrogation region, with coefficients of variation less than 19% for all matched acquisitions. Variations in velocity estimates suggest a spatial dependence of shear wave velocity through the mid-myocardium of the LVFW, with velocity estimates changing, in limited cases, through depth and lateral position.

Duke Scholars

Published In

Ultrasonic imaging

DOI

EISSN

1096-0910

ISSN

0161-7346

Publication Date

July 2009

Volume

31

Issue

3

Start / End Page

201 / 213

Related Subject Headings

  • Ventricular Function
  • Rheology
  • Myocardial Contraction
  • Image Interpretation, Computer-Assisted
  • Heart Ventricles
  • Electrocardiography
  • Elasticity Imaging Techniques
  • Echocardiography
  • Dogs
  • Animals
 

Citation

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ICMJE
MLA
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Bouchard, R. R., Hsu, S. J., Wolf, P. D., & Trahey, G. E. (2009). In vivo cardiac, acoustic-radiation-force-driven, shear wave velocimetry. Ultrasonic Imaging, 31(3), 201–213. https://doi.org/10.1177/016173460903100305
Bouchard, Richard R., Stephen J. Hsu, Patrick D. Wolf, and Gregg E. Trahey. “In vivo cardiac, acoustic-radiation-force-driven, shear wave velocimetry.Ultrasonic Imaging 31, no. 3 (July 2009): 201–13. https://doi.org/10.1177/016173460903100305.
Bouchard RR, Hsu SJ, Wolf PD, Trahey GE. In vivo cardiac, acoustic-radiation-force-driven, shear wave velocimetry. Ultrasonic imaging. 2009 Jul;31(3):201–13.
Bouchard, Richard R., et al. “In vivo cardiac, acoustic-radiation-force-driven, shear wave velocimetry.Ultrasonic Imaging, vol. 31, no. 3, July 2009, pp. 201–13. Epmc, doi:10.1177/016173460903100305.
Bouchard RR, Hsu SJ, Wolf PD, Trahey GE. In vivo cardiac, acoustic-radiation-force-driven, shear wave velocimetry. Ultrasonic imaging. 2009 Jul;31(3):201–213.
Journal cover image

Published In

Ultrasonic imaging

DOI

EISSN

1096-0910

ISSN

0161-7346

Publication Date

July 2009

Volume

31

Issue

3

Start / End Page

201 / 213

Related Subject Headings

  • Ventricular Function
  • Rheology
  • Myocardial Contraction
  • Image Interpretation, Computer-Assisted
  • Heart Ventricles
  • Electrocardiography
  • Elasticity Imaging Techniques
  • Echocardiography
  • Dogs
  • Animals