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Piezoelectric Micromachined Ultrasonic Transducer for Arterial Wall Dynamics Monitoring.

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Title: Piezoelectric Micromachined Ultrasonic Transducer for Arterial Wall Dynamics Monitoring.
Authors: Jiang, Xiaoyue1 (AUTHOR) joyj136@gmail.com, Perrot, Vincent2 (AUTHOR), Varray, Francois2 (AUTHOR), Bart, Stephen1 (AUTHOR), Hartwell, Peter G.1 (AUTHOR)
Source: IEEE Transactions on Ultrasonics Ferroelectrics & Frequency Control. Jan2022, Vol. 69 Issue 1, p291-298. 8p.
Subjects: Radial artery, Ultrasonic transducers, Laser Doppler vibrometer, Cardiovascular system, Ultrasonic measurement, Ultrasonic imaging
Abstract: In this article, a ${1.5} \times {1.5}\,\,\text {mm}^{{2}}$ piezoelectric micromachined ultrasonic transducer (PMUT) array is designed and driven with one cycle of a 5-MHz sinusoid at 10 $\text {V}_{\text {pp}}$ for radial artery motion tracking. The transmit and receive performance figure of merit (FOM) of an individual PMUT over operating frequency is modeled and validated using laser Doppler vibrometer (LDV) measurements. Given a fixed cross section, the FOM inversely scales with frequency. The array aperture size is selected to obtain enough pressure and received signal to measure the radial artery wall reflection at a 5-mm depth in tissue. The 2-mm acoustic beamwidth provides enough lateral resolution for radial artery wall motion tracking. Single-line ultrasonic pulse-echo measurements with high time resolution, also called M-mode ultrasound imaging, are demonstrated to reproduce a known target motion profile with a precision of around 0.5 $\mu \text {m}$. In vivo radial artery dynamics are measured by placing the sensor on the wrist of a volunteer. The measured diameter change waveform of the radial artery is consistent with reports in the literature and captures key arterial pulse waveform features, including systolic upstroke, systolic decline, dicrotic notch, and diastolic runoff. The system has sufficient accuracy and precision to measure both the 50 $\mu \text {m}$ overall diameter change and the 5- $\mu \text {m}$ diameter change due to the dicrotic notch. A heart rate of 70 beats/min is also derived. This demonstrates the great potential of custom PMUT arrays for continuous cardiovascular system monitoring. [ABSTRACT FROM AUTHOR]
Copyright of IEEE Transactions on Ultrasonics Ferroelectrics & Frequency Control is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 154764302
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Piezoelectric Micromachined Ultrasonic Transducer for Arterial Wall Dynamics Monitoring.
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  Data: <searchLink fieldCode="AR" term="%22Jiang%2C+Xiaoyue%22">Jiang, Xiaoyue</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> joyj136@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Perrot%2C+Vincent%22">Perrot, Vincent</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Varray%2C+Francois%22">Varray, Francois</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bart%2C+Stephen%22">Bart, Stephen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hartwell%2C+Peter+G%2E%22">Hartwell, Peter G.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22IEEE+Transactions+on+Ultrasonics+Ferroelectrics+%26+Frequency+Control%22">IEEE Transactions on Ultrasonics Ferroelectrics & Frequency Control</searchLink>. Jan2022, Vol. 69 Issue 1, p291-298. 8p.
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  Data: <searchLink fieldCode="DE" term="%22Radial+artery%22">Radial artery</searchLink><br /><searchLink fieldCode="DE" term="%22Ultrasonic+transducers%22">Ultrasonic transducers</searchLink><br /><searchLink fieldCode="DE" term="%22Laser+Doppler+vibrometer%22">Laser Doppler vibrometer</searchLink><br /><searchLink fieldCode="DE" term="%22Cardiovascular+system%22">Cardiovascular system</searchLink><br /><searchLink fieldCode="DE" term="%22Ultrasonic+measurement%22">Ultrasonic measurement</searchLink><br /><searchLink fieldCode="DE" term="%22Ultrasonic+imaging%22">Ultrasonic imaging</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In this article, a ${1.5} \times {1.5}\,\,\text {mm}^{{2}}$ piezoelectric micromachined ultrasonic transducer (PMUT) array is designed and driven with one cycle of a 5-MHz sinusoid at 10 $\text {V}_{\text {pp}}$ for radial artery motion tracking. The transmit and receive performance figure of merit (FOM) of an individual PMUT over operating frequency is modeled and validated using laser Doppler vibrometer (LDV) measurements. Given a fixed cross section, the FOM inversely scales with frequency. The array aperture size is selected to obtain enough pressure and received signal to measure the radial artery wall reflection at a 5-mm depth in tissue. The 2-mm acoustic beamwidth provides enough lateral resolution for radial artery wall motion tracking. Single-line ultrasonic pulse-echo measurements with high time resolution, also called M-mode ultrasound imaging, are demonstrated to reproduce a known target motion profile with a precision of around 0.5 $\mu \text {m}$. In vivo radial artery dynamics are measured by placing the sensor on the wrist of a volunteer. The measured diameter change waveform of the radial artery is consistent with reports in the literature and captures key arterial pulse waveform features, including systolic upstroke, systolic decline, dicrotic notch, and diastolic runoff. The system has sufficient accuracy and precision to measure both the 50 $\mu \text {m}$ overall diameter change and the 5- $\mu \text {m}$ diameter change due to the dicrotic notch. A heart rate of 70 beats/min is also derived. This demonstrates the great potential of custom PMUT arrays for continuous cardiovascular system monitoring. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of IEEE Transactions on Ultrasonics Ferroelectrics & Frequency Control is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1109/TUFFC.2021.3120283
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 8
        StartPage: 291
    Subjects:
      – SubjectFull: Radial artery
        Type: general
      – SubjectFull: Ultrasonic transducers
        Type: general
      – SubjectFull: Laser Doppler vibrometer
        Type: general
      – SubjectFull: Cardiovascular system
        Type: general
      – SubjectFull: Ultrasonic measurement
        Type: general
      – SubjectFull: Ultrasonic imaging
        Type: general
    Titles:
      – TitleFull: Piezoelectric Micromachined Ultrasonic Transducer for Arterial Wall Dynamics Monitoring.
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          Name:
            NameFull: Jiang, Xiaoyue
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            NameFull: Perrot, Vincent
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            NameFull: Varray, Francois
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            NameFull: Bart, Stephen
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            NameFull: Hartwell, Peter G.
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            – D: 01
              M: 01
              Text: Jan2022
              Type: published
              Y: 2022
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              Value: 69
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          Titles:
            – TitleFull: IEEE Transactions on Ultrasonics Ferroelectrics & Frequency Control
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