Premium
F105Transvaginal sonographic appearance of the cerebellar vermis at 14–16 weeks' gestation
Author(s) -
Perlitz Y.,
Peleg D.,
BenAmi M.
Publication year - 2000
Publication title -
ultrasound in obstetrics and gynecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.202
H-Index - 141
eISSN - 1469-0705
pISSN - 0960-7692
DOI - 10.1046/j.1469-0705.2000.00015-1-104.x
Subject(s) - gestation , medicine , cerebellar vermis , fetus , cerebellum , anatomy , dandy–walker syndrome , obstetrics , pregnancy , radiology , hydrocephalus , biology , genetics
Background The aim of this study was to evaluate the normal development of the fetal cerebellum at 14–16 weeks' gestation using transvaginal sonography (TVS). Method 195 low risk women who had structurally normal fetuses determined by a detailed anomaly scan, were included in the study. The sonographic image of the cerebellar hemispheres and the vermis was evaluated by the modified axial view of the fetal head. All women underwent a follow up scan at 20–24 weeks' gestation to determine the status of the cerebellar vermis. Results All fetuses had an open vermis at 14–16 weeks' gestation. On the follow up scan at 20–24 weeks' gestation, closure of the vermis was demonstrated in all fetuses. Conclusions At 14–16 weeks' gestation the cerebellar vermis is demonstrated to be open by TVS. This is a normal finding, and therefore, the prenatal diagnosis of Dandy‐Walker variant should be made only later than 16 weeks' gestation.