Elimination of Second-Harmonics in CMUTs using Square Pulse Excitation

Anders Lei; Søren Elmin Diederichsen; Sebastian Molbech Hansen; Matthias Bo Stuart; Jan Peter Bagge; Jørgen Arendt Jensen; Erik Vilain Thomsen

doi:10.1109/ULTSYM.2016.7728824

Elimination of Second-Harmonics in CMUTs using Square Pulse Excitation

Anders Lei, Søren Elmin Diederichsen, Sebastian Molbech Hansen, Matthias Bo Stuart, Jan Peter Bagge, Jørgen Arendt Jensen, Erik Vilain Thomsen

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

The harmonic imaging mode is today a fundamental part of ultrasound imaging; it is not only used for suppressing the grating lobe artifact, but also to reduce many other acoustical artifacts in the ultrasound image. A vital performance parameter for accepting CMUT probes as a clinical usable transducer technology is, that it can support harmonic imaging. The large bandwidth of the CMUT is a clear advantage for harmonic imaging, but the inherent nonlinear behavior of the CMUT poses an issue as it is difficult to dissociate the harmonics generated in the tissue from the harmonic content of the transmitted signal. This work presents how proper pulse coding of a bipolar pulser, which is present in most commercial ultrasound scanners, can reduce the intrinsic generated harmonic to fundamental pressure amplitude ratio to below −35 dB, making CMUT probes usable for clinical applications.

Original language	English
Title of host publication	Proceedings of 2016 IEEE International Ultrasonics Symposium
Number of pages	4
Publisher	IEEE
Publication date	2016
ISBN (Print)	978-1-4673-9898-5
ISBN (Electronic)	978-1-4673-9897-8
DOIs	https://doi.org/10.1109/ULTSYM.2016.7728824
Publication status	Published - 2016
Event	2016 IEEE International Ultrasonics Symposium - Convention Center Vinci Tours, Tours, France Duration: 18 Sep 2016 → 21 Sep 2016

Conference

Conference	2016 IEEE International Ultrasonics Symposium
Location	Convention Center Vinci Tours
Country	France
City	Tours
Period	18/09/2016 → 21/09/2016

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10.1109/ULTSYM.2016.7728824

Manuscript 2Accepted author manuscript, 225 KB

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title = "Elimination of Second-Harmonics in CMUTs using Square Pulse Excitation",

abstract = "The harmonic imaging mode is today a fundamental part of ultrasound imaging; it is not only used for suppressing the grating lobe artifact, but also to reduce many other acoustical artifacts in the ultrasound image. A vital performance parameter for accepting CMUT probes as a clinical usable transducer technology is, that it can support harmonic imaging. The large bandwidth of the CMUT is a clear advantage for harmonic imaging, but the inherent nonlinear behavior of the CMUT poses an issue as it is difficult to dissociate the harmonics generated in the tissue from the harmonic content of the transmitted signal. This work presents how proper pulse coding of a bipolar pulser, which is present in most commercial ultrasound scanners, can reduce the intrinsic generated harmonic to fundamental pressure amplitude ratio to below −35 dB, making CMUT probes usable for clinical applications.",

author = "Anders Lei and Diederichsen, {S{\o}ren Elmin} and Hansen, {Sebastian Molbech} and Stuart, {Matthias Bo} and Bagge, {Jan Peter} and Jensen, {J{\o}rgen Arendt} and Thomsen, {Erik Vilain}",

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doi = "10.1109/ULTSYM.2016.7728824",

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booktitle = "Proceedings of 2016 IEEE International Ultrasonics Symposium",

publisher = "IEEE",

address = "United States",

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Elimination of Second-Harmonics in CMUTs using Square Pulse Excitation. / Lei, Anders; Diederichsen, Søren Elmin; Hansen, Sebastian Molbech; Stuart, Matthias Bo; Bagge, Jan Peter; Jensen, Jørgen Arendt ; Thomsen, Erik Vilain.

Proceedings of 2016 IEEE International Ultrasonics Symposium. IEEE, 2016.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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AU - Diederichsen, Søren Elmin

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AU - Stuart, Matthias Bo

AU - Bagge, Jan Peter

AU - Jensen, Jørgen Arendt

AU - Thomsen, Erik Vilain

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AB - The harmonic imaging mode is today a fundamental part of ultrasound imaging; it is not only used for suppressing the grating lobe artifact, but also to reduce many other acoustical artifacts in the ultrasound image. A vital performance parameter for accepting CMUT probes as a clinical usable transducer technology is, that it can support harmonic imaging. The large bandwidth of the CMUT is a clear advantage for harmonic imaging, but the inherent nonlinear behavior of the CMUT poses an issue as it is difficult to dissociate the harmonics generated in the tissue from the harmonic content of the transmitted signal. This work presents how proper pulse coding of a bipolar pulser, which is present in most commercial ultrasound scanners, can reduce the intrinsic generated harmonic to fundamental pressure amplitude ratio to below −35 dB, making CMUT probes usable for clinical applications.

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M3 - Article in proceedings

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