Three‐dimensional multiplanar transvaginal ultrasound of the cervix in pregnancy

Bega, George; Lev-Toaff, Anna S.; Kuhlman, Kathleen; Berghella, Vincenzo; Parker, Laurence; Goldberg, Barry B.; Wapner, Ronald J.

doi:10.1046/j.1469-0705.2000.00184.x

Cited by 55 publications

(37 citation statements)

References 17 publications

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“…There are only a few studies where reference values for cervical AP diameter 12,15,17,18 are presented, but to the best of our knowledge no reference values for cervical funneling have been published. In three small studies, cervical length 9,10,21 and funneling 9,10 were assessed by 3D ultrasound. However, there are no ultrasound studies presenting reference values for all cervical dimensions (i.e.…”

Section: Introductionmentioning

confidence: 99%

Reference data representative of normal findings at two‐dimensional and three‐dimensional gray‐scale ultrasound examination of the cervix from 17 to 41 weeks' gestation

Rovas

Sladkevicius

Strobel

et al. 2005

Ultrasound in Obstet & Gyne

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Objectives To create reference values representative of normal findings on two-dimensional (2D) and three-dimensional (3D) transvaginal ultrasound (TVS) examination of the cervix from 17 to 41 weeks' gestation and to determine the agreement between cervical measurements taken by 2D and 3D TVS. Methods results was expressed as the mean (± 2 SDs) difference between the results of the two methods and as the interclass correlation coefficient (inter-CC).Results There was excellent agreement between measurements taken by 3.9 (range, 1.0-6.1) cm, 3.0 (range, 0.4-5.7) cm and 0.8 (range, 0.4-3.4 17-30 weeks to 3.5 (range, 1.8-5.5) cm at 31-40 weeks and to 4.0 (range, 2.8-5.9) cm at 41 weeks. Cervical width was 3.7 (range, 2.3-6.0) cm at 17-30 weeks and 4.5 (range, 2.3-6.1) ) cm (results obtained by 3D ultrasound). Cervical AP diameter and width did not differ between nulliparous and parous women. Median AP diameter increased from 3.0 (range, 2.0-4.6) cm at

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Section: Introductionmentioning

confidence: 99%

Reference data representative of normal findings at two‐dimensional and three‐dimensional gray‐scale ultrasound examination of the cervix from 17 to 41 weeks' gestation

Rovas

Sladkevicius

Strobel

et al. 2005

Ultrasound in Obstet & Gyne

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“…[8][9] In the present case, it was helpful to determine the limits of the gestational sac, allowing the correct diagnosis of cervical pregnancy. This imaging method also allowed a better analysis of the endometrial cavity using the coronal section in the multiplanar imaging.…”

Section: Discussionmentioning

confidence: 99%

Three-Dimensional Ultrasonographic Diagnosis of a Cervical Pregnancy

Ruano

Reya

Picone

et al. 2006

Clinics

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“…13,19 However, magnetic resonance imaging is not a practical imaging modality in pregnancy, and our goal was to investigate a sonographically based method. Others have used 3D sonography to measure the cervical length, 20,21 predict the time to spontaneous labor, 22 and predict the success of prostaglandin induction 23 in prolonged pregnancy. In this present study, 3D sonography was used to show cervical shape changes associated with both normal and abnormal pregnancy.…”

Section: Discussionmentioning

confidence: 99%

A Method to Visualize 3-Dimensional Anatomic Changes in the Cervix During Pregnancy

Iams

Tangchitnob

Socrate

et al. 2010

Journal of Ultrasound in Medicine

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Objective. The purpose of this study was to develop a method to visualize 3-dimensional (3D) anatomic changes in the cervix and lower uterine segment during the antepartum period. Methods. An observational study of patients with both uncomplicated and complicated pregnancies was performed. To visualize 3D anatomic changes, solid models were constructed from 3D sonographic data. Model construction followed a 3-step protocol. First, 3D transvaginal sonographic data of the cervix and lower uterine segment were obtained. Second, sonographic data were exported to a medical image-processing program, which was used to align 3D sonographic data obtained from a single patient at different time points. Last, sonographic data were used to guide construction of solid models using mechanical design software. Anatomic changes were visualized by comparing solid models constructed from sonographic data obtained at different time points. Results. From 16 patients who consented, 5 patients were selected for this study. Two to 4 models were derived from each of the 5 patients at 15 to 38 weeks' gestation. To show anatomic changes in the cervix and lower uterine segment, solid models from different time points in the same patient were superimposed. A total of 16 solid models were constructed. In addition, 3D changes associated with second-trimester cervical failure and successful therapeutic cerclage were shown. Conclusions. A method to visualize 3D cervical changes is presented, revealing complex anatomic changes in the lower uterine segment, cervical stroma, and cervical mucosa as pregnancy progresses. Key words: cervical ripening; cervix; 3-dimensional sonography.Received July 20, 2009, Maternal-Fetal Medicine Annual Meeting; January 26-31, 2009; San Diego, California. Address correspondence to Christopher T. Lang, MD, Ohio State University Medical Center, 395 W 12th Ave, Fifth Floor, Columbus,.com Abbreviations 3D, 3-dimensional; 2D, 2-dimensional onographic measurement of cervical length is a well-established modality for identifying women at high risk for spontaneous preterm birth.

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Three‐dimensional multiplanar transvaginal ultrasound of the cervix in pregnancy

Cited by 55 publications

References 17 publications

Reference data representative of normal findings at two‐dimensional and three‐dimensional gray‐scale ultrasound examination of the cervix from 17 to 41 weeks' gestation

Reference data representative of normal findings at two‐dimensional and three‐dimensional gray‐scale ultrasound examination of the cervix from 17 to 41 weeks' gestation

Three-Dimensional Ultrasonographic Diagnosis of a Cervical Pregnancy

A Method to Visualize 3-Dimensional Anatomic Changes in the Cervix During Pregnancy

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