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Integrated catheter for 3-D intracardiac echocardiography and ultrasound ablation.

Publication ,  Journal Article
Gentry, KL; Smith, SW
Published in: IEEE transactions on ultrasonics, ferroelectrics, and frequency control
July 2004

A catheter device with integrated ultrasound imaging array and ultrasound ablation transducer is introduced. This device has been designed for use in interventional cardiac procedures in which the cardiac anatomy is first imaged using real-time three-dimensional (3-D) ultrasound, then ablated to treat arrhythmias. The imaging array includes 112 elements operating at 5.4 MHz arranged in a 2-D matrix. Individual elements have a bandwidth of 21% and an insertion loss of 80 dB. The array has an azimuth resolution of 12 degrees and an elevation resolution of 8.7 degrees. The ablation transducer is a concentric piezoelectric transducer PZT-4 ring (outside diameter (O.D.), 4.5 mm, inside diameter (I.D.), 3.1 mm) operating at 10 MHz that surrounds the imaging array. It can produce a spatial-peak, temporal-average intensity up to 16 W/cm2. The entire device fits into a 9 Fr lumen with a 14 Fr tip to accommodate the ablation ring. With this device we have imaged, in realtime 3-D, a variety of targets including wire phantoms, fixed sheep hearts, and fresh bovine tissue. The ablation ring has been used to heat tissue-mimicking rubber 14 degrees C, as well as create lesions in fresh bovine tissue.

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Published In

IEEE transactions on ultrasonics, ferroelectrics, and frequency control

DOI

EISSN

1525-8955

ISSN

0885-3010

Publication Date

July 2004

Volume

51

Issue

7

Start / End Page

800 / 808

Related Subject Headings

  • Ultrasonic Therapy
  • Systems Integration
  • Sheep
  • Sensitivity and Specificity
  • Phantoms, Imaging
  • In Vitro Techniques
  • Equipment Failure Analysis
  • Equipment Design
  • Echocardiography, Three-Dimensional
  • Catheterization
 

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Gentry, K. L., & Smith, S. W. (2004). Integrated catheter for 3-D intracardiac echocardiography and ultrasound ablation. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 51(7), 800–808. https://doi.org/10.1109/tuffc.2004.1320739
Gentry, Kenneth L., and Stephen W. Smith. “Integrated catheter for 3-D intracardiac echocardiography and ultrasound ablation.IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control 51, no. 7 (July 2004): 800–808. https://doi.org/10.1109/tuffc.2004.1320739.
Gentry KL, Smith SW. Integrated catheter for 3-D intracardiac echocardiography and ultrasound ablation. IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 2004 Jul;51(7):800–8.
Gentry, Kenneth L., and Stephen W. Smith. “Integrated catheter for 3-D intracardiac echocardiography and ultrasound ablation.IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 51, no. 7, July 2004, pp. 800–08. Epmc, doi:10.1109/tuffc.2004.1320739.
Gentry KL, Smith SW. Integrated catheter for 3-D intracardiac echocardiography and ultrasound ablation. IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 2004 Jul;51(7):800–808.

Published In

IEEE transactions on ultrasonics, ferroelectrics, and frequency control

DOI

EISSN

1525-8955

ISSN

0885-3010

Publication Date

July 2004

Volume

51

Issue

7

Start / End Page

800 / 808

Related Subject Headings

  • Ultrasonic Therapy
  • Systems Integration
  • Sheep
  • Sensitivity and Specificity
  • Phantoms, Imaging
  • In Vitro Techniques
  • Equipment Failure Analysis
  • Equipment Design
  • Echocardiography, Three-Dimensional
  • Catheterization