Comparison of transcerebellar diameter with conventional fetal biometric parameters like biparietal diameter, head circumference, femur length and abdominal circumference in predicting gestational age in third trimester

Authors

  • Bhagyashree Dewangan Department of Obstetrics and Gynecology, Kasturba Hospital, New Delhi, India
  • Shivani Agarwal Department of Obstetrics and Gynecology, Kasturba Hospital, New Delhi, India
  • Suman Lata Mendiratta Department of Obstetrics and Gynecology, Kasturba Hospital, New Delhi, India

DOI:

https://doi.org/10.18203/2320-1770.ijrcog20222316

Keywords:

Fetal biometry, Third trimester, Transcerebellar diameter, Gestational age

Abstract

Background: Gestational age estimation in third trimester is very crucial to impart holistic antenatal care and a pre-requisite to plan various interventions. Transcerebellar diameter can predict gestational age reliably as it grows progressively with gestation and is not affected by fetal lie, skull shape and fetal growth disorders. This study was performed to compare TCD with conventional parameters like BPD, HC, FL and AC in accurate prediction of gestation age.

Methods: Fetal biometry was performed on 140 women with singleton pregnancy by abdominal ultrasound. Women included were sure of their LMP, had dating scan and fetal anomalies were ruled out. Analysis was done using Pearsons coefficient (r) and regression, p<0.05 was considered statistically significant.

Results: GA by LMP showed maximum correlation with GA by TCD (r=0.920 p<0.001) followed by HC (r=0.871) and AC (r=0.833). Least correlation was seen with BPD (r=0.789). On comparing GA by TCD and GA by conventional parameters, TCD correlated maximally with HC (r=0.882) followed by FL (r=0.868) and BPD (r=0.853) and least correlation was seen with AC (r=0.793).

Conclusions: TCD can serve as a reliable parameter for evaluation of GA in women whose LMP is unknown or when they present late in pregnancy without having a dating scan because of strong and significant correlation of GA by TCD. Moreover, TCD can also provide accurate GA in cases of fetal growth restriction, macrosomia, skeletal dysplasia where BPD, AC, FL becomes unreliable. Therefore, it should be included in routine fetal biometry.

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Author Biography

Bhagyashree Dewangan, Department of Obstetrics and Gynecology, Kasturba Hospital, New Delhi, India

Department of Obstetrics and Gynaecology

References

Callen P. Ultrasonography in obstetrics and gynecology. 3rd ed. Philadelphia, PA: WB Saunder; 1994.

Sharma G, Ghode R. Fetal transcerebellar diameter and transcerebellar diameter abdominal circumference ratio as a menstrual age independent parameter for gestational age estimation with grading of cerebellar maturity. Int J Reprod Contracept Obstet Gynecol. 2015;4:2036-40.

Fleischer AC. Ultrasonography of the prenatal and neonatal brain. J Perinatol. 2002;22(5):431.

Dashottar S, Senger KPS, Shukla Y, Singh A, Sharma S. Transcerebellar diameter: an effective tool in predicting gestational age in normal and IUGR pregnancy. Int J Reprod Contraception Obstet Gynecol. 2018;7(10):4190.

Chavez MR, Ananth C V, Smulian JC, Yeo L, Oyelese Y, Vintzileos AM. Fetal transcerebellar diameter measurement with particular emphasis in the third trimester: a reliable predictor of gestational age. Am J Obstet Gynecol. 2004;191(3):979-84.

Gupta A, Banerjee A, Rammurthy N, Revati P, Jose J, Karak P, et al. Gestational age estimation using transcerebellar diameter with grading of fetal cerebellar growth. Natl J Clin Anat. 2012;1(3):115-20.

Priya P. Determination of gestational age: correlation between foetal biometry and transverse cerebellar diameter in women with uncomplicated pregnancy. Int J Reprod Contracept Obstet Gynecol. 2017;6(8): 3599-603.

George R, Amirthalingam U, Hussain MRK, Aditiya V, Anand AM, Padmanaban E, et al. Can trans-cerebellar diameter supersede other fetal biometry in measuring gestational age? A prospective study. Egypt J Radiol Nucl Med. 2021;52(1):197.

Cinnusamy M, Shastri D, Martina J. Estimation of gestational age by ultrasound measurement of fetal transcerebellar diameter. J Anat Soc India. 2021; 70(1):19-24.

Goldstein I, Reece EA, Pilu G, Bovicelli L, Hobbins JC. Cerebellar measurements with ultrasonography in the evaluation of fetal growth and development. Am J Obstet Gynecol. 1987;156(5):1065-9.

Zakaria AM, Mohamed AH, Eldarder AKM. Comparison between transcerebellar diameter, biparietal diameter and femur length for gestational age measurement accuracy in third trimester of pregnancy. Egypt J Hosp Med. 2019;74(1):17.

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Published

2022-08-29

How to Cite

Dewangan, B., Agarwal, S., & Mendiratta, S. L. (2022). Comparison of transcerebellar diameter with conventional fetal biometric parameters like biparietal diameter, head circumference, femur length and abdominal circumference in predicting gestational age in third trimester. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, 11(9), 2494–2498. https://doi.org/10.18203/2320-1770.ijrcog20222316

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Original Research Articles