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Category: Volume 06 Issue 05 May 2018
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Title: Transcerebellar Diameter: An Independent Marker for Estimation of Gestational Age

Authors: Dr Basanta Manjari Swain, Dr Sanjib Kumar Das, Dr Mamata Singh

 DOI:  https://dx.doi.org/10.18535/jmscr/v6i5.103

Abstract

Cerebellum is a posterior cranial fossa structure, appears at the end of 5th week of gestational age. The cerebellum is easily visualised sonographically surrounded by petrous ridges and occipital bone. Measurement & demonstration of fetal cerebellum is a unique parameter of fetal brain growth & also useful in determination of gestational age. The prospective study was carried out on 186 antenatal patients (20-40 years of age) between 14-40 weeks of pregnancy attending the clinic for routine ultrasound examination. Patients who had any complication of pregnancy were not included in the study. Ultrasonographic measurement of Transverse cerebellar diameter (TCD) was done to assess the gestational age. Mean TCD was 17.77 in 14-20 weeks of gestation, 28.40 mm in 21-30 weeks and 40.00 mm in 31-40 weeks. Regression analysis indicates a significant relationship between TCD and gestational age, indicating that TCD is a good marker for estimation of gestational age.

Keywords: Fetuse, Gestational Age(GA), Transeverse Cerebellar Diameter (TCD), Ultrasonography (USG).

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Corresponding Author

Dr Mamata Singh

SCB Medical College