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Intracardiac echocardiography and acoustic radiation force impulse imaging of a dynamic ex vivo ovine heart model.

Publication ,  Journal Article
Hsu, SJ; Hubert, JL; Smith, SW; Trahey, GE
Published in: Ultrasonic imaging
April 2008

Intracardiac echocardiography (ICE) has demonstrated utility in providing high-resolution cardiac ultrasound images for guidance of numerous catheter-based interventions, including radiofrequency ablations (RFA). However, the training of interventionalists and refinement of procedures involving intracardiac catheters is costly and time consuming due to necessary clinical and animal studies. As a result, research and development of ICE for other purposes is gradual and deliberate. Intracardiac acoustic radiation force impulse (ARFI) imaging has been demonstrated to be a suitable modality to monitor the progress of RFA procedures; however, a clinical protocol has been slow to develop due to the expense and demands of clinical experiments. We report on the development and use of an ex vivo heart model to evaluate ICE and intracardiac ARFI imaging. The ability of this model to provide clinically-relevant intracardiac imaging angles was investigated by inserting an intracardiac probe into the heart and imaging it from various positions and orientations. ARFI images of all four chambers also were formed. RFAs were also performed to create stiffer lesions within the right and left ventricles. Upon completion of the ablation, ARFI imaging was used to visualize the lesion and compared with images taken from pathology.The results show the ovine heart model to be a suitable apparatus for recreating several clinically-relevant intracardiac viewing angles of the heart. Also, the results indicate the potential of the heart model to be a valuable tool in the future development and refinement of a clinical protocol for intracardiac ARFI imaging based guidance and assessment of cardiac radiofrequency ablations.

Duke Scholars

Published In

Ultrasonic imaging

DOI

EISSN

1096-0910

ISSN

0161-7346

Publication Date

April 2008

Volume

30

Issue

2

Start / End Page

63 / 77

Related Subject Headings

  • Ultrasonography, Interventional
  • Sheep, Domestic
  • Phantoms, Imaging
  • In Vitro Techniques
  • Image Processing, Computer-Assisted
  • Image Enhancement
  • Elasticity Imaging Techniques
  • Echocardiography
  • Catheter Ablation
  • Cardiac Catheterization
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Hsu, S. J., Hubert, J. L., Smith, S. W., & Trahey, G. E. (2008). Intracardiac echocardiography and acoustic radiation force impulse imaging of a dynamic ex vivo ovine heart model. Ultrasonic Imaging, 30(2), 63–77. https://doi.org/10.1177/016173460803000201
Hsu, Stephen J., Julia L. Hubert, Stephen W. Smith, and Gregg E. Trahey. “Intracardiac echocardiography and acoustic radiation force impulse imaging of a dynamic ex vivo ovine heart model.Ultrasonic Imaging 30, no. 2 (April 2008): 63–77. https://doi.org/10.1177/016173460803000201.
Hsu SJ, Hubert JL, Smith SW, Trahey GE. Intracardiac echocardiography and acoustic radiation force impulse imaging of a dynamic ex vivo ovine heart model. Ultrasonic imaging. 2008 Apr;30(2):63–77.
Hsu, Stephen J., et al. “Intracardiac echocardiography and acoustic radiation force impulse imaging of a dynamic ex vivo ovine heart model.Ultrasonic Imaging, vol. 30, no. 2, Apr. 2008, pp. 63–77. Epmc, doi:10.1177/016173460803000201.
Hsu SJ, Hubert JL, Smith SW, Trahey GE. Intracardiac echocardiography and acoustic radiation force impulse imaging of a dynamic ex vivo ovine heart model. Ultrasonic imaging. 2008 Apr;30(2):63–77.
Journal cover image

Published In

Ultrasonic imaging

DOI

EISSN

1096-0910

ISSN

0161-7346

Publication Date

April 2008

Volume

30

Issue

2

Start / End Page

63 / 77

Related Subject Headings

  • Ultrasonography, Interventional
  • Sheep, Domestic
  • Phantoms, Imaging
  • In Vitro Techniques
  • Image Processing, Computer-Assisted
  • Image Enhancement
  • Elasticity Imaging Techniques
  • Echocardiography
  • Catheter Ablation
  • Cardiac Catheterization