Evaluation of the Fetal Transverse Cerebellar Diameter (TCD) Measurement for Prediction of Gestational Age in 2nd and 3rd Trimesters of Pregnancy

Background: To study the usefulness of transcerebellar diameter measurements ultrasonographically for detection gestational age as early period. transcerebellar diameter with that determined by other parameter i.e. bi-parietal diameter, fetal length , abdominal circumference and the head circumference. Objective(s): Study aim is to see how accurate fetal transverse cerebellar diameter measured at predicting GA in the pregnancy patients second and third trimesters. Methodology: This was a cross-sectional analysis performed in Ch. Mohammad Akram teaching and research hospital with sample size of 116 pregnant healthy females with fetus normal aged 18 to 40 year. A regular ultrasound scan was performed in the pregnancy second and third trimesters. The transcerebellar diameter was calculated in additions to normal biometric parameter. Results: A observe TCD measured in mm of 116 patients was seen in a nomogram based on gestational age in weeks. This was based on the information gathered during the study. mean TCD measurements in 28 patients between the ages 14 and 20 week was 13.0 mm to 20.3mm, 41 patient between the ages 21 and 30 weeks has a mean TCD measurement of 22.2mm to 33.9mm, and 47 patients between the ages of 31 and 42 weeks has a mean TCD measurement of 37.5 weeks to 58.0. Conclusion(s): The TCD is accurate parameters for the assessment of GA in the 2nd & 3rd trimester of pregnant women. Keywords:Gestational age; Transcerebellar diameter; Head Circumference; Fetal length; Abdominal Circumference; Bi-parietal diameter. DOI: 10.7176/JHMN/90-11 Publication date:June 30th 2021