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Related Experiment Videos

A method of computerised isotope dynamic proctography.

M Papachrysostomou1, T M Griffin, C Ferrington

  • 1Department of Surgery, Western General Hospital, Edinburgh, UK.

European Journal of Nuclear Medicine
|January 1, 1992
PubMed
Summary
This summary is machine-generated.

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Radioisotope proctography effectively assesses long-standing constipation by measuring anorectal angles and pelvic floor movement during defecation. This dynamic imaging provides key insights into evacuation completeness and timing.

Area of Science:

  • Gastroenterology
  • Radiology
  • Pelvic Floor Imaging

Background:

  • Constipation is a common condition affecting quality of life.
  • Understanding anorectal function is crucial for diagnosing and treating constipation.

Purpose of the Study:

  • To evaluate the utility of radioisotope proctography in assessing anorectal dynamics in patients with chronic constipation.
  • To quantify changes in anorectal angle and pelvic floor position during simulated defecation.

Main Methods:

  • Radioisotope proctography using a radiolabelled synthetic potato mash.
  • Dynamic imaging with a gamma-camera to record changes during simulated defecation.
  • Computer analysis of images to measure anorectal angles and pelvic floor movements.

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Main Results:

  • Median anorectal angles were recorded at rest (105°), during voluntary contraction (91°), straining (120°), and evacuation (126°).
  • Pelvic floor movements included ascent on contraction (28 mm) and descent during straining (-8 mm) and evacuation (-27 mm).
  • Rectal evacuation completeness averaged 58%, with a mean defecation time of 64 seconds.

Conclusions:

  • Radioisotope proctography provides valuable quantitative data on anorectal function in constipation.
  • This method enhances the assessment of evacuation dynamics, including completeness and timing.
  • The findings aid in understanding the pathophysiology of chronic constipation and inform treatment strategies.