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Acoustic radiation force impulse imaging (ARFI) on an IVUS circular array.

Publication ,  Journal Article
Patel, V; Dahl, JJ; Bradway, DP; Doherty, JR; Lee, SY; Smith, SW
Published in: Ultrasonic imaging
April 2014

Our long-term goal is the detection and characterization of vulnerable plaque in the coronary arteries of the heart using intravascular ultrasound (IVUS) catheters. Vulnerable plaque, characterized by a thin fibrous cap and a soft, lipid-rich necrotic core is a precursor to heart attack and stroke. Early detection of such plaques may potentially alter the course of treatment of the patient to prevent ischemic events. We have previously described the characterization of carotid plaques using external linear arrays operating at 9 MHz. In addition, we previously modified circular array IVUS catheters by short-circuiting several neighboring elements to produce fixed beamwidths for intravascular hyperthermia applications. In this paper, we modified Volcano Visions 8.2 French, 9 MHz catheters and Volcano Platinum 3.5 French, 20 MHz catheters by short-circuiting portions of the array for acoustic radiation force impulse imaging (ARFI) applications. The catheters had an effective transmit aperture size of 2 mm and 1.5 mm, respectively. The catheters were connected to a Verasonics scanner and driven with pushing pulses of 180 V p-p to acquire ARFI data from a soft gel phantom with a Young's modulus of 2.9 kPa. The dynamic response of the tissue-mimicking material demonstrates a typical ARFI motion of 1 to 2 microns as the gel phantom displaces away and recovers back to its normal position. The hardware modifications applied to our IVUS catheters mimic potential beamforming modifications that could be implemented on IVUS scanners. Our results demonstrate that the generation of radiation force from IVUS catheters and the development of intravascular ARFI may be feasible.

Duke Scholars

Published In

Ultrasonic imaging

DOI

EISSN

1096-0910

ISSN

0161-7346

Publication Date

April 2014

Volume

36

Issue

2

Start / End Page

98 / 111

Related Subject Headings

  • Ultrasonography, Interventional
  • Phantoms, Imaging
  • Elasticity Imaging Techniques
  • Elastic Modulus
  • Catheters
  • Acoustics
  • 4003 Biomedical engineering
  • 0903 Biomedical Engineering
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Patel, V., Dahl, J. J., Bradway, D. P., Doherty, J. R., Lee, S. Y., & Smith, S. W. (2014). Acoustic radiation force impulse imaging (ARFI) on an IVUS circular array. Ultrasonic Imaging, 36(2), 98–111. https://doi.org/10.1177/0161734613511595
Patel, Vivek, Jeremy J. Dahl, David P. Bradway, Joshua R. Doherty, Seung Yun Lee, and Stephen W. Smith. “Acoustic radiation force impulse imaging (ARFI) on an IVUS circular array.Ultrasonic Imaging 36, no. 2 (April 2014): 98–111. https://doi.org/10.1177/0161734613511595.
Patel V, Dahl JJ, Bradway DP, Doherty JR, Lee SY, Smith SW. Acoustic radiation force impulse imaging (ARFI) on an IVUS circular array. Ultrasonic imaging. 2014 Apr;36(2):98–111.
Patel, Vivek, et al. “Acoustic radiation force impulse imaging (ARFI) on an IVUS circular array.Ultrasonic Imaging, vol. 36, no. 2, Apr. 2014, pp. 98–111. Epmc, doi:10.1177/0161734613511595.
Patel V, Dahl JJ, Bradway DP, Doherty JR, Lee SY, Smith SW. Acoustic radiation force impulse imaging (ARFI) on an IVUS circular array. Ultrasonic imaging. 2014 Apr;36(2):98–111.
Journal cover image

Published In

Ultrasonic imaging

DOI

EISSN

1096-0910

ISSN

0161-7346

Publication Date

April 2014

Volume

36

Issue

2

Start / End Page

98 / 111

Related Subject Headings

  • Ultrasonography, Interventional
  • Phantoms, Imaging
  • Elasticity Imaging Techniques
  • Elastic Modulus
  • Catheters
  • Acoustics
  • 4003 Biomedical engineering
  • 0903 Biomedical Engineering