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Elastography cervix

Edgar Hernandez-Andrade, Eli Maymon, Suchaya Luewan, Gaurav Bhatti, Mohammad Mehrmohammadi, Offer Erez, Percy Pacora, Bogdan Done, Sonia S Hassan, Roberto Romero
OBJECTIVE: To determine whether a soft cervix identified by shear-wave elastography between 18 and 24 weeks of gestation is associated with increased frequency of spontaneous preterm delivery (sPTD). MATERIALS AND METHODS: This prospective cohort study included 628 consecutive women with a singleton pregnancy. Cervical length (mm) and softness [shear-wave speed: (SWS) meters per second (m/s)] of the internal cervical os were measured at 18-24 weeks of gestation...
May 29, 2018: Journal of Perinatal Medicine
Shubhra Agarwal, Arjit Agarwal, Pawan Joon, Shalini Saraswat, Shruti Chandak
Background: Preterm birth is a major health problem in developing and developed countries leading to rising health care costs and long-term neurodevelopmental disability. The study aims to evaluate the role of new quantitative markers, like the elastography of cervix (shear wave speed estimation), fetal adrenal zone enlargement, and corrected fetal adrenal gland volume; in preterm birth prediction and analyze their relative importance. Thus, these markers may be beneficial in early preterm birth detection and prevent the related morbidities...
February 2018: Ultrasound: Journal of the British Medical Ultrasound Society
Helen Feltovich, Lindsey Carlson
The process of parturition is poorly understood, but the cervix clearly plays a key role. Because of this, recent research efforts have been directed at objective quantification of cervical remodeling. Investigation has focused on two basic areas: (1) quantification of tissue deformability and (2) presence, orientation, and/or concentration of microstructural components (e.g. collagen). Methods to quantify tissue deformability include strain elastography and shear wave elasticity imaging (SWEI). Methods to describe tissue microstructure include attenuation and backscatter...
December 2017: Seminars in Perinatology
Meng Xie, Xuyin Zhang, Meng Yu, Wenping Wang, Keqin Hua
OBJECTIVES: The purpose of this study was to investigate the stiffness of the cervix after the loop electrosurgical excision procedure (LEEP) by transvaginal elastography and its potential ability to predict future pregnancy. METHODS: A retrospective study included patients of reproductive age who underwent LEEP for cervical high-grade squamous intraepithelial lesions on the basis of colposcopic findings and who desired fertility. The characteristics on conventional transvaginal ultrasonography and elastography before and 6 months after LEEP were reviewed and analyzed...
May 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
Arjit Agarwal, Shubhra Agarwal, Shruti Chandak
Background Preterm birth is one of the important causes of neonatal morbidity where we rely on subjective criteria such as modified Bishop's scoring and contemporary sonographic measurement of cervical length. Acoustic radiation force impulse (ARFI) is a technological advancement in elastography that can be employed in prediction of cervical softening and preterm labor. Purpose To evaluate the role of ARFI technique and shear wave velocity (SWV) estimates as a predictor of preterm birth and its comparison with other clinical and sono-elastographic measures...
January 1, 2017: Acta Radiologica
Antonio Stanziano, Anna Maria Caringella, Clementina Cantatore, Giuseppe Trojano, Ettore Caroppo, Giuseppe D'Amato
BACKGROUND: Ultrasound elastography is a non-invasive medical imaging technique able to quantitatively characterize the stiffness of a given tissue. It has been shown to predict the risk for cervical insufficiency and preterm delivery, and to allow differentiation of malignancy from normal tissue. The present study sought to evaluate whether cervical tissue dishomogeneity, as assessed by cervical ultrasound elastography, may predict the embryo transfer (ET) ease in infertile women undergoing IVF/ICSI...
August 14, 2017: Reproductive Biology and Endocrinology: RB&E
Tetsuo Ono, Daisuke Katsura, Kazutaka Yamada, Kaori Hayashi, Akiko Ishiko, Shunichiro Tsuji, Fuminori Kimura, Kentaro Takahashi, Takashi Murakami
AIM: The aim of this study was to evaluate the usefulness of shear-wave elastography (SWE) for measuring change in cervical stiffness during pregnancy, with regions of interest (ROI) designed for easy identification. METHODS: A total of 280 women were enrolled in this study. SWE was performed at a routine prenatal visit. A measurement area was chosen at the anterior part of the cervix, and a circular ROI 5 mm in diameter was set at two points, 5-10 mm (lower point) and 15-20 mm (upper point) from the external cervical os...
July 10, 2017: Journal of Obstetrics and Gynaecology Research
Malgorzata Swiatkowska-Freund, Krzysztof Preis
Uterine cervix is a part of the uterus responsible for maintaining pregnancy till term. As long as the cervix remains long and firm and its internal orifice (os) is closed, it can withstand enlargement of the uterine contents and resultant growing pressure. Mechanical properties of the cervix change during pregnancy; the cervix ripens prior to delivery, then effaces and dilates with contractions of the uterus. Ripening of the cervix can be assessed using the Bishop score and ultrasonographically determined length of the cervical canal and internal os...
2017: International Journal of Women's Health
Vera Oturina, Kerstin Hammer, Mareike Möllers, Janina Braun, Maria Karina Falkenberg, Kathrin Oelmeier de Murcia, Ute Möllmann, Maria Eveslage, Arrigo Fruscalzo, Walter Klockenbusch, Ralf Schmitz
OBJECTIVE: The aim of the study was to assess the cervical strain pattern by an ultrasound elastography cervix examination and to determine its association with preterm delivery. METHODS: In this study, 30 cases resulting in preterm birth and 30 gestational age-matched controls were included. A vaginal ultrasound examination with cervical length and elastography measurement was performed. We calculated four strain ratios (SR1-SR4) of the regions of interest (ROIs) arranged in pairs in four different positions on the anterior cervical lip...
November 27, 2017: Journal of Perinatal Medicine
Hyunjung Kim, Han Sung Hwang
The cervix is a cylindrical structure that is proximally connected to the uterus and distally to the vaginal cavity. The Bishop score has been used to evaluate the cervix during pregnancy. However, alternatives have been evaluated because the Bishop score is uncomfortable for patients, relies on a subjective examination, and lacks internal os data. Elastography has been used to assess the cervix, as it can estimate tissue stiffness. Recent articles on elastography for cervical assessment during pregnancy have focused on its usefulness for prediction of preterm birth and successful labor induction...
January 2017: Obstetrics & Gynecology Science
A Leonhard, P Sandager, C K Rasmussen, H Lene, N Uldbjerg
No abstract text is available yet for this article.
September 2016: Ultrasound in Obstetrics & Gynecology
Arrigo Fruscalzo, Edoardo Mazza, Helen Feltovich, Ralf Schmitz
In normal pregnancy, the cervix functions as a protective mechanical barrier that must remain tight and closed. Premature remodeling and consecutive shortening occur in many cases of spontaneous preterm birth. Although the complex underlying physiology of normal and abnormal cervical remodeling is not fully understood, it is clear that cervical softening occurs prior to delivery, and inappropriate timing seems to be associated with preterm delivery. Also, degree of cervical softness is a component of the Bishop score currently used clinically to predict successful induction of labor...
October 2016: Journal of Medical Ultrasonics
Heiko Tzschätzsch, Jing Guo, Florian Dittmann, Sebastian Hirsch, Eric Barnhill, Korinna Jöhrens, Jürgen Braun, Ingolf Sack
Palpation is one of the most sensitive, effective diagnostic practices, motivating the quantitative and spatially resolved determination of soft tissue elasticity parameters by medical ultrasound or MRI. However, this so-called elastography often suffers from limited anatomical resolution due to noise and insufficient elastic deformation, currently precluding its use as a tomographic modality on its own. We here introduce an efficient way of processing wave images acquired by multifrequency magnetic resonance elastography (MMRE), which relies on wave number reconstruction at different harmonic frequencies followed by their amplitude-weighted averaging prior to inversion...
May 2016: Medical Image Analysis
Marie Muller, Dora Aït-Belkacem, Mahdieh Hessabi, Jean-Luc Gennisson, Gilles Grangé, François Goffinet, Edouard Lecarpentier, Dominique Cabrol, Mickaël Tanter, Vassilis Tsatsaris
The quantitative assessment of the cervix is crucial for the estimation of pre-term delivery risk and the prediction of the success of labor induction. We conducted a cross-sectional study using shear wave elastography based on the supersonic shear imaging technique. The shear wave speed (SWS) of the lower anterior part of the cervix was quantified over an 8-mm region of interest in 157 pregnant women. Cervical SWS is slightly but significantly reduced in patients diagnosed with pre-term labor and in patients who actually delivered pre-term...
November 2015: Ultrasound in Medicine & Biology
Laura Peralta, Francisca Sonia Molina, Juan Melchor, Luisa Fernanda Gómez, Paloma Massó, Jesús Florido, Guillermo Rus
Purpose To explore the feasibility of transient elastography (TE) to quantify cervical stiffness changes during normal pregnancy and its spatial variability. Materials and Methods TE was used to quantify the cervical stiffness in four anatomical regions. 42 women between 17 and 43 years of age and at 6 - 41 weeks of gestation were studied. The stiffness was related to gestational age at the time of examination, interval from ultrasound examination to delivery and cervical length to evaluate the potential of TE to assess cervical ripening...
August 2017: Ultraschall in der Medizin
C Compan, A Rossi, G Piquier-Perret, A Delabaere, F Vendittelli, D Lemery, D Gallot
OBJECTIVE OF THE REVIEW: To identify predictors of preterm delivery in the context of threatened preterm labour. MAIN POINTS: Tobacco use and previous history of preterm delivery are the main anamnestic elements to predict preterm birth. High positive predictive value of vaginal examination is restricted to cases with strong cervical alterations like dilatation over 4 cm. In case of discrete cervical alterations, literature confirms the great interest for cervical length ultrasonographic measurement as it reduces false positive cases...
October 2015: Journal de Gynécologie, Obstétrique et Biologie de la Reproduction
Slawomir Wozniak, Piotr Czuczwar, Piotr Szkodziak, Tomasz Paszkowski
BACKGROUND: Incorrect selection of women for labour induction may increase the risk of caesarean section and other postpartum and neonatal complications. It has been recently shown that elastography of the uterine cervix holds the potential to predict the outcome of pharmacological labour induction. There are no data on the usefulness of elastography in predicting the outcome of mechanical induction of labour. AIM: To assess the usefulness of elastographic cervical assessment in predicting the success of Foley catheter labour induction...
June 2015: Australian & New Zealand Journal of Obstetrics & Gynaecology
Ambrogio P Londero, Ralf Schmitz, Serena Bertozzi, Lorenza Driul, Arrigo Fruscalzo
AIM: To determine the accuracy of cervical elastography in predicting labor induction success. MATERIALS AND METHODS: A systematic search, review, and meta-analysis of observational studies published in English language between January 2000 and October 2014 was performed. It included studies considering cervix sonoelastography as the index test and successful labor or vaginal delivery as the reference standard. As cervix length and Bishop score were considered comparator tests, the quality of the included studies was assessed using quality assessment tool for diagnostic accuracy studies (QUADAS) tool...
March 2016: Journal of Perinatal Medicine
Brandi N Briggs, Michael E Stender, Patrick M Muljadi, Meghan A Donnelly, Virginia D Winn, Virginia L Ferguson
Clinical practice requires improved techniques to assess human cervical tissue properties, especially at the internal os, or orifice, of the uterine cervix. Ultrasound elastography (UE) holds promise for non-invasively monitoring cervical stiffness throughout pregnancy. However, this technique provides qualitative strain images that cannot be linked to a material property (e.g., Young's modulus) without knowledge of the contact pressure under a rounded transvaginal transducer probe and correction for the resulting non-uniform strain dissipation...
June 25, 2015: Journal of Biomechanics
M M Maurer, S Badir, M Pensalfini, M Bajka, P Abitabile, R Zimmermann, E Mazza
Measuring the stiffness of the uterine cervix might be useful in the prediction of preterm delivery, a still unsolved health issue of global dimensions. Recently, a number of clinical studies have addressed this topic, proposing quantitative methods for the assessment of the mechanical properties of the cervix. Quasi-static elastography, maximum compressibility using ultrasound and aspiration tests have been applied for this purpose. The results obtained with the different methods seem to provide contradictory information about the physiologic development of cervical stiffness during pregnancy...
June 25, 2015: Journal of Biomechanics
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