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First-trimester fetal biometry using transvaginal sonography.

D M Lasser1, D B Peisner, J Vollebergh

  • 1Columbia University College of Physicians and Surgeons, Department of Obstetrics and Gynecology, New York 10032, USA.

Ultrasound in Obstetrics & Gynecology : the Official Journal of the International Society of Ultrasound in Obstetrics and Gynecology
|March 1, 1993
PubMed
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First-trimester fetal biometry using transvaginal sonography provides accurate gestational age estimates. This method aids in detecting early fetal growth abnormalities in normal pregnancies.

Area of Science:

  • Obstetrics and Gynecology
  • Medical Imaging
  • Fetal Medicine

Background:

  • Transvaginal sonography offers improved imaging and maneuverability for early pregnancy assessments.
  • Accurate dating in early pregnancy is crucial for monitoring fetal development and identifying potential issues.

Purpose of the Study:

  • To establish regression models for key fetal biometric parameters in the first trimester.
  • To evaluate the accuracy and utility of transvaginal sonography for first-trimester fetal biometry.
  • To assess the potential for detecting early fetal growth abnormalities.

Main Methods:

  • A study involving 144 normal pregnancies with precisely dated first-trimester assessments.
  • Construction of regression models for crown-rump length, biparietal diameter, head circumference, and abdominal circumference.

Related Experiment Videos

  • Performance of error analysis on the biometric measurement techniques and calculations.

    • Main Results:

    • Established regression models for first-trimester fetal biometry.
    • Demonstrated the feasibility and accuracy of transvaginal sonography for these measurements.
    • Identified the potential for detecting deviations from normal growth patterns.

    Conclusions:

    • First-trimester fetal biometry via transvaginal sonography enables precise gestational age estimation.
    • This technique can assist in the early identification of fetal maldevelopment and abnormal growth patterns.