2009
DOI: 10.7863/jum.2009.28.1.1
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Three‐Dimensional Ultrasonography of the Fetal Vermis at 18 to 26 Weeks' Gestation

Abstract: Objective. The purpose of this study was to establish the normality of the fetal vermis, ie, the time of appearance of the primary fissure, as well as its measurements between 18 and 26 weeks' gestation, using 3-dimensional (3D) ultrasonography. Methods. A prospective cross-sectional study of normal singleton pregnancies was conducted. Examinations were performed with high-resolution transabdominal ultrasonography using the axial plane in 173 fetuses between 18 and 26 weeks' gestation. Postprocessing measureme… Show more

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Cited by 39 publications
(30 citation statements)
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References 25 publications
(35 reference statements)
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“…The torcular Herophili cannot be imaged clearly with sonography due to acoustic shadowing from the skull bones and we inferred its position by observing the angulation of the tentorium (Figure 2). To evaluate the cerebellar vermis we used a combination of qualitative findings (visualization of fastigium and fissures)3, 6, 13, 14 as well as biometry8, 10. Nevertheless, frequently we were uncertain about vermian integrity, particularly in the context of Dandy–Walker malformation, because of upward compression by the posterior fossa cyst (Figure 3).…”
Section: Resultsmentioning
confidence: 99%
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“…The torcular Herophili cannot be imaged clearly with sonography due to acoustic shadowing from the skull bones and we inferred its position by observing the angulation of the tentorium (Figure 2). To evaluate the cerebellar vermis we used a combination of qualitative findings (visualization of fastigium and fissures)3, 6, 13, 14 as well as biometry8, 10. Nevertheless, frequently we were uncertain about vermian integrity, particularly in the context of Dandy–Walker malformation, because of upward compression by the posterior fossa cyst (Figure 3).…”
Section: Resultsmentioning
confidence: 99%
“…All fetuses diagnosed with an abnormal fluid collection in the posterior fossa were included. In all cases a detailed neurosonographic evaluation, including multiplanar visualization of the posterior fossa, was performed as described previously6, 8, 12, 14–16. The categorization of sonographic findings was based on recent studies3, 4, 7 and is summarized in Table 1 and Figure 1.…”
Section: Methodsmentioning
confidence: 99%
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“…Improvement of ultrasound technology and expertise in fetal ultrasound have increased diagnosis performance. The diagnosis of vermis agenesis can usually be made on ultrasound at 20–22 weeks of gestation, on a midline sagittal view, or using a 3D ultrasound examination . Axial transverse diameter of the cerebellum can also be measured on ultrasound to rule out the diagnosis of cerebellar hemispheres hypoplasia.…”
Section: Discussionmentioning
confidence: 99%
“…The 3D ultrasound data can be analyzed and displayed in multiple planes and display modalities that better reflect the 3D nature of a structure or anomaly than does traditional two‐dimensional (2D) ultrasound. In fact, 3D ultrasound has been reported to be helpful in the detection of several brain anomalies as well as in the evaluation of both midline brain structures and the posterior fossa6–15.…”
Section: Introductionmentioning
confidence: 99%