ArticleUltrasound in medicine & biology2017
Assessment of Structural Heterogeneity and Viscosity in the Cervix Using Shear Wave Elasticity Imaging: Initial Results from a Rhesus Macaque Model.
Article in Ultrasound in medicine & biology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Nomogram Incorporating Multimodal Transvaginal Ultrasound Assessment at 20 to 24 Weeks' Gestation for Predicting Spontaneous Preterm Delivery in Low-Risk Women.International journal of women's health · 2022Article
- Shear wave dispersion as a potential biomarker for cervical remodeling during pregnancy: evidence from a non-human primate model.Frontiers in physics · 2021Article
- Why Are Viscosity and Nonlinearity Bound to Make an Impact in Clinical Elastographic Diagnosis?Sensors (Basel, Switzerland) · 2020Review
- Photoacoustic imaging of the uterine cervix to assess collagen and water content changes in murine pregnancy.Biomedical optics express · 2019Article
- Quantitative Ultrasound Parameters Based on the Backscattered Echo Power Signal as Biomarkers of Cervical Remodeling: A Longitudinal Study in the Pregnant Rhesus Macaque.Ultrasound in medicine & biology · 2019Article
- Quantitative assessment of cervical softening during pregnancy in the Rhesus macaque with shear wave elasticity imaging.Physics in medicine and biology · 2018Article
- Detection of Changes in Cervical Softness Using Shear Wave Speed in Early versus Late Pregnancy: An in Vivo Cross-Sectional Study.Ultrasound in medicine & biology · 2018Article
- New techniques in evaluation of the cervix.Seminars in perinatology · 2017Review
- Cervical Evaluation: From Ancient Medicine to Precision Medicine.Obstetrics and gynecology · 2017Article
Corrections and comments
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Authors and funding
7 authors.
Funding
Abstract
Shear wave elasticity imaging has shown promise in evaluation of the pregnant cervix. Changes in shear wave group velocity have been attributed exclusively to changes in stiffness. This assumes homogeneity within the region of interest and purely elastic tissue behavior. However, the cervix is structurally/microstructurally heterogeneous and viscoelastic. We therefore developed strategies to investigate these complex tissue properties. Shear wave elasticity imaging was performed ex vivo on 14 unripened and 13 misoprostol-ripened cervix specimens from rhesus macaques. After tests of significant and uniform shear wave displacement, as well as reliability of estimates, group velocity decreased significantly from the distal (vaginal) to proximal (uterine) end of unripened, but not ripened, specimens. Viscosity was quantified by the slope of the phase velocity versus frequency. Dispersion was observed in both groups (median: 5.5 m/s/kHz, interquartile range: 1.5-12.0 m/s/kHz), also decreasing toward the proximal cervix. This work suggests that comprehensive assessment of complex tissues such as cervix requires consideration of structural heterogeneity and viscosity.
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