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Related Experiment Videos

[MR pelvimetric reference values].

T Pfammatter1, B Marincek, G K von Schulthess

  • 1Departement Medizinische Radiologie, Universitätsspital Zürich.

Rofo : Fortschritte Auf Dem Gebiete Der Rontgenstrahlen Und Der Nuklearmedizin
|December 1, 1990
PubMed
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Magnetic resonance imaging (MRI) offers reproducible pelvimetry measurements. Pelvic diameters in patients are larger than textbook values, suggesting population growth impacts pelvic size.

Area of Science:

  • Radiology
  • Anatomy
  • Obstetrics

Background:

  • Pelvimetry is crucial for assessing pelvic dimensions in obstetrics.
  • Traditional pelvimetry methods rely on static anatomical references.
  • Textbook pelvic dimensions have remained unchanged for a century.

Purpose of the Study:

  • To evaluate the feasibility and reproducibility of magnetic resonance (MR) imaging for complete pelvimetry.
  • To compare MR-derived pelvic diameters with established anatomical and obstetrical textbook values.
  • To investigate potential changes in pelvic dimensions over time.

Main Methods:

  • Complete pelvimetry was performed using MR imaging.
  • Measurements were taken by four independent observers to assess reproducibility.

Related Experiment Videos

  • MR-derived pelvic diameters were compared to reference values from anatomical and obstetrical textbooks.

    • Main Results:

    • Complete pelvimetry is easily achievable with MR imaging.
    • The reproducibility of MR pelvimetry measurements was found to be acceptable.
    • In 7 out of 9 dimensions, MR-derived pelvic diameters were larger than textbook values.
    • This suggests an increase in average pelvic diameters in the studied population.

    Conclusions:

    • MR imaging is a reliable and reproducible method for complete pelvimetry.
    • Current anatomical and obstetrical textbook values for pelvic diameters may be outdated.
    • Population-wide increases in body size likely contribute to larger pelvic dimensions.