Ring array transducers for real-time 3-D imaging of an atrial septal occluder.

Journal Article (Journal Article)

We developed new miniature ring array transducers integrated into interventional device catheters such as used to deploy atrial septal occluders. Each ring array consisted of 55 elements operating near 5 MHz with interelement spacing of 0.20 mm. It was constructed on a flat piece of copper-clad polyimide and then wrapped around an 11 French O.D. catheter. We used a braided cabling technology from Tyco Electronics Corporation to connect the elements to the Volumetric Medical Imaging (VMI) real-time 3-D ultrasound scanner. Transducer performance yielded a -6 dB fractional bandwidth of 20% centered at 4.7 MHz without a matching layer vs. average bandwidth of 60% centered at 4.4 MHz with a matching layer. Real-time 3-D rendered images of an en face view of a Gore Helex septal occluder in a water tank showed a finer texture of the device surface from the ring array with the matching layer.

Full Text

Duke Authors

Cited Authors

  • Light, ED; Lindsey, BD; Upchurch, JA; Smith, SW

Published Date

  • August 2012

Published In

Volume / Issue

  • 38 / 8

Start / End Page

  • 1483 - 1487

PubMed ID

  • 22698504

Pubmed Central ID

  • PMC3434960

Electronic International Standard Serial Number (EISSN)

  • 1879-291X

International Standard Serial Number (ISSN)

  • 0301-5629

Digital Object Identifier (DOI)

  • 10.1016/j.ultrasmedbio.2012.03.019


  • eng