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Clinical and Experimental Obstetrics & Gynecology  2021, Vol. 48 Issue (3): 583-589    DOI: 10.31083/j.ceog.2021.03.2420
Original Research Previous articles | Next articles
Reliability of shear-wave elastography (SWE) for investigating cervix elastic properties in normal and benign pathological situations
Laura Castro1, *(), Jose Antonio García-Mejido1, 2, *(), Ainhoa Holgado1, Rocio García1, Ana Fernández-Palacín2, Jose Antonio Sainz1, 3
1Department of Obstetrics and Gynecology, Valme University Hospital, 41014 Seville, Spain
2Department of Preventive Medicine and Public Health, Biostatistics Unit, University of Seville, 41012 Seville, Spain
3Department of Obstetrics and Gynecology, University of Seville, 41012 Seville, Spain
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Abstract  
Background: Our aim in this study is to evaluate the inter- and intraobserver correlation of the different shear-wave elastography (SWE) parameters (stiffness) in both control and pathological groups. Methods: Evaluations of cervical stiffness measurements were performed in 39 non-pregnant patients (21 cases without gynecological pathology and other 18 cases with cervical preinvasive cervical lesion susceptible to conization) aged between 18–65 years old, without vaginal infection other than HPV and without another gynecological pathology. We used SWE (shear modulus) endovaginal ultrasound. We performed the evaluation in the midsagittal plane of the uterine cervix with measurements at 0.5, 1 and 1.5 cm from external cervical OS, in both anterior and posterior cervical lips as well as the cervical canal. Sonoelastography was performed by two examiners, each one making two separate assessments of uterine cervical stiffness using SWE, in one single visit. Interclass correlation coefficients (ICC) with 95% CIs were used to assess intra and interobserver measurements repeatability. Results: We obtained an adequate intra and interobserver correlation (ICC 0.996–0.999) of stiffness in all anatomical sites both in normal and pathologic cervix (p < 0.005). The stiffness in normal cervix is from 38.28 ± 19.76 kPa vs to 61.58 ± 27.54 kPa in the pathological cervix. Conclusion: The SWE has an adequate intra and interobserver correlation for its use in evaluating both normal and pathological cervix.
Key words:  Shear-wave elastography      Cervical pathology      Cervical stiffness      Reproducibility     
Submitted:  14 December 2020      Revised:  05 March 2021      Accepted:  08 March 2021      Published:  15 June 2021     
*Corresponding Author(s):  lauracastroportillo@gmail.com (Laura Castro); jagmejido@hotmail.com (Jose Antonio García-Mejido)   

Cite this article: 

Laura Castro, Jose Antonio García-Mejido, Ainhoa Holgado, Rocio García, Ana Fernández-Palacín, Jose Antonio Sainz. Reliability of shear-wave elastography (SWE) for investigating cervix elastic properties in normal and benign pathological situations. Clinical and Experimental Obstetrics & Gynecology, 2021, 48(3): 583-589.

URL: 

https://ceog.imrpress.com/EN/10.31083/j.ceog.2021.03.2420     OR     https://ceog.imrpress.com/EN/Y2021/V48/I3/583

[1] Maria Aparecida Mazzutti Verlangieri Carmo, Helmer Herren, Francisco J. C. Dos-Reis, Fabricio Da Silva Costa, Julio C. Rosa-e-Silva, Antonio Alberto Nogueira, Omero Benedicto Poli-Neto. Reliability and agreement of three-dimensional/four-dimensional transperineal ultrasound in women with chronic pelvic pain[J]. Clinical and Experimental Obstetrics & Gynecology, 2021, 48(3): 494-499.
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