Frequency-agility of collapse-mode 1-D CMUT array

Martin Pekar, Nenad Mihajlovic, Harm Belt, Alexander F. Kolen, Bas Jacobs, Johan G. Bosch, Hendrik Vos, Gijs Van Soest, Nico De Jong, Debbie Rem-Bronneberg

    Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

    3 Citations (Scopus)


    The size of the features, and their relative distance to the probe, vary a lot in the intracardiac echocardiography application thus challenging the design of the probe. Therefore it may be beneficial to design a versatile probe which can produce both a large image to provide overview for navigation, and a smaller but detailed anatomic image on the structures of interest. This could be achieved by a probe whose frequency range of operation can be tuned - on the fly - to the specific task. Our goal is to develop a forward-looking catheter which can change its imaging frequency in the range 5 MHz - 15 MHz, allowing for both high penetration and high resolution intracardiac imaging within a single device. Our design comprises a capacitive micromachined ultrasonic transducer (CMUT) array operated in collapse-mode, which allows tuning of the imaging frequency. Custom-made front-end electronics is integrated in a catheter tip close to the CMUT for improved performance. In this paper, we report on the frequency-agility of the fabricated collapse-mode 1-D CMUT array.

    Original languageEnglish
    Title of host publication2016 IEEE International Ultrasonics Symposium, IUS 2016
    ISBN (Electronic)9781467398978
    Publication statusPublished - 1 Nov 2016
    Event2016 IEEE International Ultrasonics Symposium - Tours, France
    Duration: 18 Sep 201621 Sep 2016


    Conference2016 IEEE International Ultrasonics Symposium
    Abbreviated titleIUS 2016


    • Catheters
    • Imaging
    • Heart
    • Probes
    • Frequency measurement
    • Navigation
    • Ice


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