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

Ring array transducers for real-time 3-D imaging of an atrial septal occluder.
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DOI:
10.1016/j.ultrasmedbio.2012.03.019
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发表时间:
2012-08
影响因子:
2.9
通讯作者:
Smith, Stephen W.
Smith, Stephen W.
中科院分区:
医学3区
文献类型:
--
作者:
Light, Edward D.;Lindsey, Brooks D.;Upchurch, Joseph A.;Smith, Stephen W.

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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 Corp to connect the elements to the Volumetrics Medical Imaging (VMI) real-time 3D ultrasound scanner. Transducer performance yielded a –6 dB fractional bandwidth of 20% centered at 4.7 MHz without a matching layer versus average bandwidth of 60% centered at 4.4 MHz with a matching layer. Real time 3D 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.
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