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Dynamic MR imaging compared with evacuation proctography when evaluating anorectal configuration and pelvic floor
J C Healy1, S Halligan, R H Reznek
1Academic Department of Radiology, St. Bartholomew's Hospital, West Smithfield, London, United Kingdom.
AJR. American Journal of Roentgenology
|September 1, 1997
Summary
Dynamic MR imaging and evacuation proctography show significant correlation for anorectal configuration measurements. However, agreement was poor for anorectal junction descent and angle change, indicating limited clinical interchangeability.
Area of Science:
- Gastroenterology
- Radiology
- Pelvic Floor Imaging
Background:
- Accurate assessment of anorectal configuration is crucial for diagnosing defecatory disorders.
- Dynamic MR imaging offers a non-invasive alternative to evacuation proctography.
Purpose of the Study:
- To compare the agreement between dynamic MR imaging and evacuation proctography for anorectal measurements.
- To evaluate the clinical utility of dynamic MR imaging in assessing anorectal configuration.
Main Methods:
- Ten women with constipation underwent sequential dynamic MR imaging and evacuation proctography.
- Measurements of anorectal junction descent, anorectal angle, rectal axis position, and rectocele depth were analyzed.
Main Results:
- Significant correlations were found for anorectal junction descent (r=0.7), anorectal angle change (r=0.78), rectal axis position (r=0.62), and rectocele depth (r=0.82).
- Poor statistical agreement was observed for anorectal junction descent and anorectal angle change between the two techniques.
Conclusions:
- Dynamic MR imaging and evacuation proctography demonstrate significant correlation in anorectal configuration measurements.
- Despite correlation, poor agreement suggests limited interchangeability for specific measurements, impacting clinical decision-making.