Farhana Haider, Mahreen Badar, Nazir Ahmad.
Association between Length of Femur and Transverse Cerebellar Diameter for Estimating Gestation age by Ultrasonography in Pregnancy.
Pak J Med Health Sci Jan ;13(2):465-9.

Aim: To find out whether transverse cerebellar diameter (TCD) or femur length is more valid method for estimating the gestation age by using ultrasonograohy in pregnancy . Methodology : This study was carried out in the Obs. and Gynae ward of Ibne-Siena Hospital Multan. The study was conducted from June 2018 to November 2018. 50 pregnant ladies in the third trimester of pregnancy from 25- 37 weeks were recruited. Transcerebellar diameter (TCD) and femur length (FL) were measured by using ultrasonograhic technique. All relevant data was taken, analyzed and interpreted. Results: Transcerebellar diameter (TCD) and femur length both having positive association but Transcerebellar diameter (TCD) was found to be a more valid (p value =00001) than fetal length (p value=0.0004) in third trimester of pregnancy for correct estimation corresponding to the gestational age . Conclusions: From the study it has been revealed that Transcerebellar diameter (TCD) is valid method by ultrasonography for estimation of gestational period .

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