Normal Range of the Fetal Cerebellar Vermis in the Second Trimester of Pregnancy
Abstract
Purpose. To develop the reference range of the craniocaudal diameter and anteroposterior diameter of the cerebellar vermis. Materials and methods. Fetal brain was evaluated in 292 normal fetuses at 18-27 weeks of gestation. The multiplanar mode to obtain the mid-sagittal plane and measured craniocaudal diameter and anteroposterior diameter of the cerebellar vermis. Cranio-caudal diameter was defined as maximum distance between cranial and caudal surfaces of the vermis, anteroposterior diameter was defined as the maximum distance between anterior and posterior surfaces of the vermis. Results. In 98% satisfactory visualization and measurements of the cerebellar vermis were obtained. Size of the cerebellar vermis is increasing during the second trimester of pregnancy. Developed the reference range (mean, 5th and 95th percentiles) of the cranio-caudal diameter and anteroposterior diameter of the cerebellar vermis. Conclusion. Sizing of the cerebellar vermis may be useful for assessment development of the cerebellar vermis in cases of suspicion on cerebral anomalies like cerebellar vermian hypoplasia, partial agenesia of the cerebellar vermis, Blake’s pouch cyst. The use of normative values of the cranio-caudal diameter and anteroposterior diameter of the cerebellar vermis will assess its development and increase the percentage of detection of anomalies of the fetal brain during the second trimester
About the Author
Olesya Ivanovna Kozlova
“Institute of improvement of qualification of FMBA of Russia”
Russian Federation
Russian Federation
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Review
For citations:
Kozlova O.I. Normal Range of the Fetal Cerebellar Vermis in the Second Trimester of Pregnancy. Medical Visualization. 2015;(2):106-109. (In Russ.)
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