1Assistant Professor, Department of Gynae and Obst., Rama Medical College Hospital and Research Center Pilkhuwa, Hapur
2Assistant Professor, Dept. of Anatomy, Saraswathi institute of Medical Science, Anwarpur, Hapur, Uttar Pradesh, India
3Professor, Dept. of Anatomy, Saraswathi institute of Medical Science, Anwarpur, Hapur, Uttar Pradesh, India
4Professor & Head, Dept. of Anatomy, Saraswathi institute of Medical Science, Anwarpur, Hapur, Uttar Pradesh, India
*Corresponding author: Alpana Bansal, Assistant Professor, Department of Gynae and obst., Rama Medical College Hospital and research center Pilkhuwa Hapur, U.P., Phone No. 09412618969, E-mail: bansalmukesh4@gmail.com
Online published on 16 September, 2014.
The evaluation of the posterior fossa of the fetal cranium has been accepted as part of the routine obstetric ultrasonographic (USG) examination. The size of the cerebellum or transverse cerebellar diameter (TCD) is important because it is a useful biometric parameter in estimating gestational age (GA) in the second trimester1. TCD may be a more reliable predictor than biparietal diameter, since the posterior fossa is not affected by external pressure including fetal malposition, breech presentation or oligohydramnios, which may induce distortion of the fetal head1. TCD can reliably be used in cases of femur achondroplasia where femur length is unreliable. Because TCD seems unaffected by intrauterine growth restriction (IUGR) 2,3, measuring TCD is especially advantageous when IUGR is suspected or when GA is uncertain.
To study Transverse cerebellar diameter by ultrasonography in 2nd trimester fetuses and correlate it with gestational age of fetuses, in western uttar Pradesh
Woman having Pregnancy between 14 to 24 weeks were considered for Ultrasound Examination. Patients who had any complication of pregnancy were not included in the study.
The Karl Pearson correlation coefficient between gestational age & transverse cerebellar diameter was found to be- 0.9543. p-value is < 0.001 which was Highly significant.
During 14 to 24 weeks of gestation- transverse cerebellar diameter in mm was found equivalent to gestation age of fetus.
In Intra Uterine Growth Retarded Fetuses: - The value of measurement of Transverse Cerebellar Diameter was less than the normally grown fetuses, but statistically significant.
In the normal & Intra Uterine Growth Restricted Fetuses the Transverse Cerebellar Diameter Increases with advancing age. Transverse Cerebellar Diameter Shows linear relationship with Gestational Age. This study shows highly significant correlation between Transverse Cerebellar Diameter & Gestation age in normal & intra uterine growth restricted fetuses.
Transverse Cerebellar Diameter, Gestational Age, Ultrasound, IUGR, Fetuses
