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Vaginal Anatomy on MRI: New Information Obtained Using Distention
Alan H Appelbaum1, Jeffrey K Zuber1, Roberto Levi-D'Ancona1
1From the Memphis Veterans Affairs Medical Center, and the University of Tennessee Health Sciences Center, Memphis.
Southern Medical Journal
|November 5, 2018
Summary
Pelvic MRI with vaginal contrast distention confirmed three distinct anatomic zones of the vagina. This complex configuration may aid in childbirth and the design of vaginal devices.
Area of Science:
- Anatomic imaging
- Pelvic Magnetic Resonance Imaging (MRI)
Background:
- Previous understanding of vaginal anatomy is limited.
- Detailed zonal anatomy of the vagina requires advanced imaging techniques.
Purpose of the Study:
- To demonstrate and confirm three distinct anatomic zones of the vagina.
- To utilize pelvic MRI with vaginal contrast distention for detailed visualization.
Main Methods:
- Retrospective review of 107 pelvic MRI scans with vaginal contrast distention.
- Observation for a three-zone configuration (sphincteric, transition, forniceal).
- Measurement of vaginal diameters across zones and statistical comparison.
Main Results:
- The three-zone vaginal configuration was observed in nearly all cases (106/107).
- Statistically significant changes in anteroposterior diameters were noted across the zones.
- Visual observations of zonal configuration were supported by measurements.
Conclusions:
- The study confirms a complex three-zone configuration of the distended vagina.
- This detailed anatomy may play a role in parturition.
- Findings could inform the design of intravaginal devices.
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