A Tiled Ultrasound Matrix Transducer for Volumetric Imaging of the Carotid Artery

Djalma Simões dos Santos*, Fabian Fool, Moein Mozaffarzadeh, Maysam Shabanimotlagh, Emile Noothout, Taehoon Kim, Nuriel Rozsa, Hendrik J. Vos, Johan G. Bosch, Michiel A.P. Pertijs, Martin D. Verweij, Nico de Jong

*Corresponding author for this work

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High frame rate three-dimensional (3D) ultrasound imaging would offer excellent possibilities for the accurate assessment of carotid artery diseases. This calls for a matrix transducer with a large aperture and a vast number of elements. Such a matrix transducer should be interfaced with an application-specific integrated circuit (ASIC) for channel reduction. However, the fabrication of such a transducer integrated with one very large ASIC is very challenging and expensive. In this study, we develop a prototype matrix transducer mounted on top of multiple identical ASICs in a tiled configuration. The matrix was designed to have 7680 piezoelectric elements with a pitch of 300 μm × 150 μm integrated with an array of 8 × 1 tiled ASICs. The performance of the prototype is characterized by a series of measurements. The transducer exhibits a uniform behavior with the majority of the elements working within the −6 dB sensitivity range. In transmit, the individual elements show a center frequency of 7.5 MHz, a −6 dB bandwidth of 45%, and a transmit efficiency of 30 Pa/V at 200 mm. In receive, the dynamic range is 81 dB, and the minimum detectable pressure is 60 Pa per element. To demonstrate the imaging capabilities, we acquired 3D images using a commercial wire phantom.

Original languageEnglish
Article number9799
Issue number24
Publication statusPublished - 14 Dec 2022

Bibliographical note

Funding Information:
This research is a part of the PUMA and UltraXtreme projects (project numbers 13154 and P17-32, respectively), which are financed by the Netherlands Organization for Scientific Research (NWO).

Publisher Copyright:
© 2022 by the authors.


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