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Single Crystal High Frequency Intravascular Ultrasound Transducer with 40 Micron Axial Resolution.

07:00 EST 28th November 2019 | BioPortfolio

Summary of "Single Crystal High Frequency Intravascular Ultrasound Transducer with 40 Micron Axial Resolution."

Intravascular ultrasound (IVUS) is one of the most useful tools available today to assist intravascular stenting procedures. Having higher resolution is very important for helping doctors to evaluate the nature of atherosclerosis plaques. Current commercial IVUS systems have a spatial resolution of 70-200 µm in axial direction and 200-400 µm in lateral direction, which are insufficient for accurate diagnosis. We report here a three-matching-layer design IVUS transducer using 0.72Pb(Mg1/3Nb2/3)O3 0.28PbTiO3 single crystal, which can improve the axial resolution to 40 µm without sacrificing the penetration depth. Wire phantom imaging and in vitro porcine coronary artery imaging show noticeably better axial resolution and similar penetration depth compared to that of a commercial IVUS transducer.

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This article was published in the following journal.

Name: IEEE transactions on ultrasonics, ferroelectrics, and frequency control
ISSN: 1525-8955
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