The Vermian-Crest Angle: A New Method to Assess Fetal Vermis Position within the Posterior Fossa Using 3-Dimensional Multiplanar Sonography.

Spinelli, Marialuigia; Di Meglio, Lavinia; Mosimann, Beatrice; Di Naro, Edoardo; Surbek, Daniel; Raio, Luigi (2019). The Vermian-Crest Angle: A New Method to Assess Fetal Vermis Position within the Posterior Fossa Using 3-Dimensional Multiplanar Sonography. Fetal diagnosis and therapy, 46(4), pp. 223-230. Karger 10.1159/000494721

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BACKGROUND Normal morphometry of the vermis and its relation to the posterior fossa (PF) rule out most major anomalies of the cerebellum. However, accurate categorization of the position and size of the fetal vermis remains a challenge. OBJECTIVE Our aim was to test a new method to assess the position and size of fetal vermis on 3-dimensional ultrasound (3D-US). METHODS We measured the vermian-crest angle (VCA) in normal fetuses using multiplanar 3D-US. We also assessed the diameters (superoinferior, anteroposterior, and horizontal) and volume of the vermis. The Spearman rank test and linear and polynomial regression analyses were used for statistical purposes. RESULTS We included 126 fetuses. Mean ± SD gestational age (GA) was 26.3 ± 4.6 (range 17-35.5) weeks. Mean ± SD superoinferior, anteroposterior, and horizontal diameters were 16.2 ± 4.9, 11.2 ± 3.6, and 5.6 ± 1.6 mm, respectively. Median (range) vermian volume was 0.50 (0.05-2.9) cm3. The VCA was 64.49° ± 11.45. We found no correlation between GA and VCA (r = 0.15; p = 0.13), a linear correlation between GA and vermian diameters, and a quadratic correlation between GA and vermian volume. CONCLUSIONS We provide a new method to assess vermian position and size within the PF using 3D-US. The combined information may be of value for screening purposes, particularly to differentiate between the various pathological situations encountered within the PF.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Gynaecology, Paediatrics and Endocrinology (DFKE) > Clinic of Gynaecology
04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > Unit Childrens Hospital > Forschungsgruppe Pränatale Medizin

UniBE Contributor:

Spinelli, Marialuigia; Mosimann, Beatrice; Surbek, Daniel and Raio, Luigi

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1015-3837

Publisher:

Karger

Language:

English

Submitter:

Monika Zehr

Date Deposited:

07 Mar 2019 16:03

Last Modified:

24 Oct 2019 01:30

Publisher DOI:

10.1159/000494721

PubMed ID:

30517923

Uncontrolled Keywords:

3-Dimensional ultrasound Cerebellum Prenatal diagnosis Vermian-crest angle Vermis

URI:

https://boris.unibe.ch/id/eprint/125686

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