| A novel method for evaluating uterine cervical consistency using vaginal ultrasound gray-level histogram. | |
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MedLine Citation:
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PMID: 20443760 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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AIMS: To evaluate uterine cervical consistency using a vaginal ultrasound gray-level histogram. METHODS: Vaginal ultrasound and digital examination were performed for 214 women with low-risk singleton pregnancy during 27-30(th) pregnancy week. The mean gray-level (MGL) of an ultrasound gray-level histogram, representing the echogenicity of a region of interest, was measured in the midsection of anterior and posterior cervical walls. The difference in MGL between anterior and posterior (AP difference) was related to the Bishop sub-score for cervical consistency (0, 1, or 2), determined before ultrasound. RESULTS: A larger positive AP difference indicated significantly lower Bishop sub-score. After analyzing the receiver operator characteristic curves for the AP difference, a value of 1.42 and -1.98 was the best cut-off value to determine a hard cervix (score 0) and a soft cervix (score 2), respectively. To identify a hard cervix, this test had 71% sensitivity and 82% specificity. For a soft cervix, it was 66% and 87%, respectively. CONCLUSIONS: A more echogenic anterior than posterior cervix indicates a hard cervix; the greater the difference in echogenicity between anterior and posterior walls the harder the cervix. The difference in MGL of the ultrasound gray-level histogram may enable objective evaluation of cervical consistency. |
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Authors:
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Tomoyuki Kuwata; Shigeki Matsubara; Nobuyuki Taniguchi; Akihide Ohkuchi; Takashi Ohkusa; Mitsuaki Suzuki |
Publication Detail:
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Type: Evaluation Studies; Journal Article |
Journal Detail:
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Title: Journal of perinatal medicine Volume: 38 ISSN: 1619-3997 ISO Abbreviation: J Perinat Med Publication Date: 2010 Sep |
Date Detail:
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Created Date: 2010-09-03 Completed Date: 2011-01-04 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0361031 Medline TA: J Perinat Med Country: Germany |
Other Details:
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Languages: eng Pagination: 491-4 Citation Subset: IM |
Affiliation:
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Department of Obstetrics and Gynecology, Jichi Medical University, Shimotsuke, Tochigi, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Cervical Ripening Cervix Uteri / anatomy & histology, ultrasonography* Female Humans Infant, Newborn Pregnancy Pregnancy Trimester, Second Pregnancy Trimester, Third Ultrasonography, Prenatal / methods*, statistics & numerical data Vagina / ultrasonography* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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