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    Shear wave elastography of the maternal cervix: A transabdominal technique

    272244.pdf (949.0Kb)
    Access Status
    Open access
    Authors
    O'Hara, S.
    Zelesco, M.
    Sun, Zhonghua
    Date
    2018
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    O'Hara, S. and Zelesco, M. and Sun, Z. 2018. Shear wave elastography of the maternal cervix: A transabdominal technique. Australasian Journal of Ultrasound Medicine. 22 (2): pp. 96-103.
    Source Title
    Australasian Journal of Ultrasound Medicine
    DOI
    10.1002/ajum.12116
    ISSN
    1441-6891
    School
    School of Molecular and Life Sciences (MLS)
    Remarks

    This is the peer reviewed version of the following article: O'Hara, S. and Zelesco, M. and Sun, Z. 2018. Shear wave elastography of the maternal cervix: A transabdominal technique. Australasian Journal of Ultrasound Medicine 22 (2): pp. 96-103, which has been published in final form at 10.1002/ajum.12116. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving at http://olabout.wiley.com/WileyCDA/Section/id-828039.html

    URI
    http://hdl.handle.net/20.500.11937/71616
    Collection
    • Curtin Research Publications
    Abstract

    Introduction: Reduced cervical length as seen on transvaginal ultrasound is a strong indicator of spontaneous preterm birth in the high-risk population. In low-risk women the appropriate method to assess this risk is still debatable. Ultrasound elastography has been used to assess cervical strength. This research aimed to assess the accuracy of shear wave speeds (SWS) obtained deep to echo free fluid-filled structures, and the use of two-dimensional shear wave on the maternal cervix using a transabdominal ultrasound approach. Method: Agreement of SWS measurements obtained through fluid and directly onto an ultrasound phantom was assessed for accuracy. Speed measurements were obtained in the anterior and posterior portions of the internal and external cervical os on 50 gravid participants in the mid-trimester of pregnancy. Results: No difference in SWS was obtained in the phantom with either direct contact or through the saline water-bath (P > 0.05). In 50 participants, measurements were obtainable at the external os anterior and posterior in 49 and 38 participants, respectively, and in 47 and 42 participants for internal os anterior and posterior. The mean speed obtained at the external os anterior and posterior was 2.01 0.51 and 2.38 0.47 m/s, respectively, and at the internal os anterior and posterior, 2.49 0.50 and 2.58 0.41 m/s. Conclusion: Shear wave speed measurements can be obtained in the maternal cervix using a transabdominal approach with a moderately full maternal bladder in most patients, with a larger number of shear wave measurements obtained in the anterior cervix compared to posterior.

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    • Shear Wave Elastography on the Uterine Cervix: Technical Development for the Transvaginal Approach
      O'Hara, S.; Zelesco, M.; Sun, Zhonghua (2018)
      Objectives: This research aimed to identify biological and technical confounders in the nonpregnant cervix when applying shear wave elastography with an endovaginal transducer. Methods: Cervical speed measurements were ...
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      O'Hara, Sandra; Zelesco, M.; Sun, Zhonghua (2015)
      Introduction: The appropriate ultrasound technique to assess the maternal cervical length in women at low risk of preterm birth is yet to be established. This study aimed to determine the accuracy of different ultrasound ...
    • Cervical length for predicting preterm birth and a comparison of ultrasonic measurement techniques
      O’Hara, Sandra; Zelesco, Marilyn; Sun, Zhonghua (2013)
      Introduction: Preterm birth is the leading cause of neonatal morbidity and mortality not attributable to congenital anomalies or aneuploidy. It has been shown that a shortened cervix is a powerful indicator of preterm ...
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