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| Autor principal: | |
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| Format: | Recurso digital |
| Idioma: | anglès |
| Publicat: |
Zenodo
2026
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| Matèries: | |
| Accés en línia: | https://doi.org/10.5281/zenodo.19015548 |
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- <p><strong><span>Abstract</span></strong></p> <p><strong><span>Background: </span></strong><span>Accurate estimation of gestational age (GA) is fundamental to optimal obstetric care. Conventional ultrasound parameters such as biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC), and femur length (FL) may be affected by fetal growth variations and presentation. Novel sonographic parameters including placental thickness (PT), transcerebellar diameter (TCD), and fetal kidney length (FKL) have shown promise as reliable indicators of gestational age.</span></p> <p><strong><span>Objectives: </span></strong><span>To evaluate the accuracy of placental thickness, transcerebellar diameter, and fetal kidney length individually and as a composite parameter for estimation of gestational age in normal singleton pregnancies, and to compare them with conventional sonographic parameters.</span></p> <p><strong><span>Materials and Methods: </span></strong><span>This prospective observational study was conducted in the Department of Radiodiagnosis, Gandhi Medical College and associated Hamidia Hospital, Bhopal, from May 2023 to November 2024. Pregnant women with normal singleton pregnancies and reliable last menstrual period (LMP) were included. Ultrasonographic measurements of PT, TCD, FKL, and conventional parameters (BPD, HC, AC, FL) were obtained. Gestational age estimates were compared with LMP-based gestational age using correlation and regression analysis.</span></p> <p><strong><span>Results: </span></strong><span>Placental thickness, transcerebellar diameter, and fetal kidney length demonstrated strong positive correlations with gestational age (p < 0.001). Among the novel parameters, TCD showed the highest correlation with gestational age, followed by FKL and PT. Composite gestational age derived from novel parameters showed excellent agreement with LMP-based gestational age and conventional sonographic estimates, with minimal mean difference. </span></p> <p><strong><span>Conclusion: </span></strong><span>Placental thickness, transcerebellar diameter, and fetal kidney length are reliable sonographic parameters for gestational age estimation. Transcerebellar diameter emerged as the most accurate single parameter. A composite model using these novel parameters can serve as a valuable adjunct or alternative to conventional biometric indices, especially in situations where standard parameters are unreliable.</span></p>