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Updated: Mar 14, 2026
State of the Art Cranial Ultrasound Imaging in Neonates
Published on: February 2, 2015
Quantitative Evaluation of the Fetal Cerebellar Vermis Using the Median View on Two-Dimensional Ultrasound
Cenk Gezer1, Atalay Ekin1, Naciye Sinem Gezer2
1Department of Obstetrics and Gynecology, Izmir Tepecik Training and Research Hospital, Izmir, Turkey.
Background:
Evaluation of the cerebellum and vermis is one of the integral parts of the fetal cranial anomaly screening.
Objectives:
The aim of this study was to create a nomogram for fetal vermis measurements between 17 and 30 gestational weeks.
Patients And Methods:
This prospective study was conducted on 171 volunteer pregnant women between March 2013 and December 2014. Measurements of the fetal cerebellar vermis diameters in the sagittal plane were performed by two-dimensional transabdominal ultrasonography.
Results:
Optimal median planes were obtained in 117 of the cases. Vermian diameters as a function of gestational age were expressed by regression equations and the correlation coefficients were found to be highly statistically significant (P < 0.001). The normal mean (± standard deviation) for each gestational week was also defined.
Conclusion:
This study presents the normal range of the two-dimensional fetal vermian measurements between 17 and 30 gestational weeks. In the absence of a three-dimensional ultrasonography, two-dimensional ultrasonography could also be used confidently with more time and effort.
