Comparison of diagnostic value of fetal cerebellar hemisphere circumference measurement and routine ultrasonography parameters for determination of the gestational age

Recently، ultrasonographic assessment of gestational age has assumed an integral role in prenatal care. The aim of this study was to compare the diagnostic value of fetal cerebellar hemisphere circumference measurement with those of other parameters of routine ultrasonography for estimation of gestational age. This was a descriptive and analytical study and included318 pregnant women with gestational ages of 14 to 41 weeks and distinct LMP in Imam Reza Hospital in Kermanshah. The parameters of BPD، HC، AC، FL، TCD and CHC were measured by Siemens G50 ultrasound system، and gestational age was estimated. Data were analyzed by Spearman correlation coefficient. SPSS 20 software was used for statistical analysis. Based on LMP، mean ± SD of gestational age was 29. 18±8. 86. But considering the parameters of BPD، HC، AC، FL، TCD and CHC we found mean±SD of 28. 94±8. 96، 28. 93±9. 01، 28. 76±8. 96، 28. 87±8. 98، 28. 88±9. 01 and 28. 76±8. 99 weeks respectively. Spierman correlation coefficients between LMP and other parameters of routine ultrasonography were more than 0. 99 and significantly were correlated with one another. Comparison of the diagnostic value of fetal cerebellar hemisphere circumference measurement with those of other parameters of routine ultrasonography for estimation of gestational age did not show any significant differences. We can use measurement of fetal cerebellar hemisphere circumference with other parameters of routine ultrasonography.