Sparse Volumetric PZT Array with Density Tapering

None, None; None, None; None, None; None, None; None, None; None, None; None, None; None, None; None, None; None, None

Sparse Volumetric PZT Array with Density Tapering

Conference Paper (2018)

Author(s)

Rik Vos (Erasmus MC, ImPhys/Acoustical Wavefield Imaging )

Enrico Boni (University of Florence)

Filippo Piccardi (University of Florence, ImPhys/Acoustical Wavefield Imaging )

Andrea Traversi (University of Florence, ImPhys/Acoustical Wavefield Imaging )

Davide Galeotti (ImPhys/Acoustical Wavefield Imaging , University of Florence)

Emile Noothout (ImPhys/Acoustical Wavefield Imaging )

Verya Daeichin (ImPhys/Acoustical Wavefield Imaging )

Martin Verweij (Erasmus MC, ImPhys/Acoustical Wavefield Imaging )

Nico de Jong (Erasmus MC, ImPhys/Acoustical Wavefield Imaging )

undefined More Authors (External organisation)

ImPhys/Acoustical Wavefield Imaging

DOI related publication

https://doi.org/10.1109/ULTSYM.2018.8580197 Final published version

To reference this document use

https://resolver.tudelft.nl/uuid:16db9166-0cc3-4960-b2d2-f4c5847c6676

More Info

expand_more

Publication Year

2018

Language

English

ImPhys/Acoustical Wavefield Imaging

ISBN (electronic)

978-1-5386-3425-7

Event

2018 IEEE International Ultrasonics Symposium, IUS 2018 (2018-10-22 - 2018-10-25), Portopia Hotel, Kobe, Japan

Downloads counter

258

Abstract

Volumetric medical ultrasound imaging currently provides either high resolution or high frame rates. We propose a sparse array probe with only 256 elements that are density tapered. All elements are directly wired to an ultrasound engine, thus being flexible in transmission and reception. Here we present the design, realization, and characterization of a probe prototype for carotid 3D high frame rate scanning (5 MHz). The design is based on rapid prototyping with printed circuit board substrates to wire the elements to external connectors. The results show that 95% of the elements was acoustically active, producing a peak pressure of 400 kPa when focused at 24 mm with a 20 V amplitude, 3-cycle tone burst. The fractional one-way −6dB bandwidth (FBW) was 32 %, which is narrower than the designed one (50% FBW), due to an unexplained ringing effect. These results show that the probe is viable for volumetric imaging tests, albeit that it can be further optimized.