Electronic Instrumentation Laboratory
Department of Microelectronics

Nuriel Rozsa

Publications

  1. A 2000-Volumes/s 3D Ultrasound Imaging Chip with Monolithically-Integrated 11.7x23.4mm2 2048-Element CMUT Array and Arbitrary-Wave TX Beamformer
    Nuriel N.M. Rozsa; Zhao Chen; Taehoon Kim; Peng Guo; Yannick Hopf; Jason Voorneveld; Djalma Simoes dos Santos; Emile Noothout; Zu-Yao Chang; Chao Chen; Vincent A. Henneken; Nico de Jong; Hendrik J. Vos; Johan G. Bosch; Martin D. Verweij; Michiel A. P. Pertijs;
    In Dig. Techn. Paper IEEE Symposium on VLSI Circuits (VLSI),
    2024. Accepted.

  2. Effect of SAR-ADC Non-Idealities on Medical Ultrasound B-Mode Imaging
    N. Radeljic-Jakic; A. Flikweert; Y. Hopf; N. Rozsa; M. Pertijs;
    In Proc. IEEE International Ultrasonics Symposium (IUS),
    2023. abstract, accepted.

  3. A Tiled Ultrasound Matrix Transducer for Volumetric Imaging of the Carotid Artery
    dos Santos, Djalma Simões; Fool, Fabian; Mozaffarzadeh, Moein; Shabanimotlagh, Maysam; Noothout, Emile; Kim, Taehoon; Rozsa, Nuriel; Vos, Hendrik J.; Bosch, Johan G.; Pertijs, Michiel A. P.; Verweij, Martin D.; de Jong, Nico;
    Sensors,
    Volume 22, Issue 24, pp. 1--23, 2022. DOI: 10.3390/s22249799
    Abstract: ... 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.

    document

  4. Automated Characterization of Matrix Transducer Arrays using the Verasonics Imaging System
    Djalma Simoes dos Santos; Fabian Fool; Taehoon Kim; Emile Noothout; Nuriel Rozsa; Hendrik J. Vos; Johan G. Bosch; Michiel A. P. Pertijs; Martin D. Verweij; Nico de Jong;
    In Proc. IEEE International Ultrasonics Symposium (IUS),
    2022.

  5. Automated Characterization of Matrix Transducer Arrays using the Verasonics Imaging System
    Djalma Simoes dos Santos; Fabian Fool; Taehoon Kim; Emile Noothout; Nuriel Rozsa; Hendrik J. Vos; Johan G. Bosch; Michiel A. P. Pertijs; Martin D. Verweij; Nico de Jong;
    In Proc. IEEE International Ultrasonics Symposium (IUS),
    2022.

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