Transcerebellar diameter versus biparietal diameter for the measurement of gestational age in third trimester
Article Category: Research paper
Published Online: Feb 08, 2022
Page range: 39 - 43
Received: Aug 20, 2021
Accepted: Oct 20, 2022
DOI: https://doi.org/10.15557/JoU.2022.0007
Keywords
© 2022 Mohamed Adel Ali, Eman AbdElSalam NasrElDin, Mahmoud Moussa, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Aim
To compare the accuracy of biparietal diameter and transcerebellar diameter in measuring the gestational age during the third trimester of pregnancy.
Material and methods
In this prospective observational study, 275 pregnant women with singleton pregnancy between 32 and 37 weeks gestational age were recruited from the outpatient clinics of both Helwan University Hospital and Ain Shams University Maternity Hospital, Cairo, Egypt, during the period from February 2021 to August 2021. Transcerebellar and biparietal diameters of the fetus were measured by a radiologist blinded to the women’s gestational age, and compared to the gestational age acquired from a reliable date of first day of last menstrual period.
Results
The gestational age calculated by first day of last menstrual period ranged from 32 to 37 weeks (34.35 ± 1.4), while estimated by transcerebellar and biparietal diameters ranged from 31 to 37 weeks (34.31 ± 1.39) and 31 to 39 weeks (34.32 ± 1.44), respectively. There was a strong positive correlation between gestational age and transcerebellar diameter (
Conclusions
Transcerebellar diameter is a reliable single sonographic fetal biometric parameter for the assessment of gestational age in third trimester of pregnancy.