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Cannula Implantation into the Cisterna Magna of Rodents
10:13

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Published on: May 23, 2018

The cisterna magna size in normal second-trimester fetuses.

Asli Koktener1, Gulcin Dilmen, Aydin Kurt

  • 1Department of Radiology, Fatih University School of Medicine, Ankara, Turkey. akoktener@yahoo.com

Journal of Perinatal Medicine
|May 8, 2007
PubMed
Summary

This study established a normogram for fetal cisterna magna size between 16 and 24 weeks of gestation. These measurements provide crucial normative data for fetal development and can indicate potential posterior fossa pathologies or chromosomal disorders.

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Area of Science:

  • Fetal Medicine
  • Prenatal Diagnosis
  • Neurosonography

Background:

  • The cisterna magna is a key anatomical landmark in fetal neurosonography.
  • Accurate measurement of the cisterna magna is essential for assessing fetal development.
  • Establishing normative data is crucial for identifying potential abnormalities.

Purpose of the Study:

  • To evaluate fetal cisterna magna size between 16 and 24 weeks of gestation.
  • To create a normogram for cisterna magna measurements during this gestational period.
  • To provide reference ranges for clinical use in prenatal assessments.

Main Methods:

  • Prospective study of 194 normal singleton pregnancies.
  • Transabdominal ultrasonography used for cisterna magna measurements.
  • Measurements performed between 16 and 24 weeks of gestation.

Main Results:

  • A significant linear correlation was found between gestational age and cisterna magna size (R²=0.75, P<0.0001).
  • A significant linear correlation was also observed between biparietal diameter and cisterna magna size (R²=0.74, P<0.0001).
  • Normal mean values (+/- SD) for cisterna magna were defined for each gestational week.

Conclusions:

  • The study provides normal ranges for fetal cisterna magna measurements.
  • Cisterna magna size offers normative data for fetal growth and development assessment.
  • Abnormal cisterna magna measurements may suggest posterior fossa pathologies or chromosomal abnormalities.