ArticleNeurogastroenterology and motility2019
Comparison of changes in rectal area and volume during MR evacuation proctography in healthy and constipated adults.
Article in Neurogastroenterology and motility, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 12 citations in OpenAlex.
- Clinical Trial: Effectiveness and Safety of a Novel Anal Insert Device for Treatment of Faecal Incontinence.Alimentary pharmacology & therapeutics · 2026Trial
- Inadequate Propulsion and Pelvic Floor Relaxation in Dyssynergic Defecation: Insights From Synchronous Proctomanometry.Gastroenterology · 2025Article
- Magnetic Resonance Imaging Template to Standardize Reporting of Evacuation Disorders.Journal of imaging · 2024Review
- Comparison of Anorectal Manometry, Rectal Balloon Expulsion Test, and Defecography for Diagnosing Defecatory Disorders.Gastroenterology · 2022Article
- Inadequate Rectal Pressure and Insufficient Relaxation and Abdominopelvic Coordination in Defecatory Disorders.Gastroenterology · 2022Article
- Diagnostic Strategy and Tools for Identifying Defecatory Disorders.Gastroenterology clinics of North America · 2022Review
- Physiotherapy for Prevention and Treatment of Fecal Incontinence in Women-Systematic Review of Methods.Journal of clinical medicine · 2020Review
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
Abstract
backgroundDuring proctography, rectal emptying is visually estimated by the reduction in rectal area. The correlation between changes in rectal area, which is a surrogate measure of volume, is unclear. Our aims were to compare the change in rectal area and volume during magnetic resonance (MR) proctography and to compare these parameters with rectal balloon expulsion time (BET).
methodsIn 49 healthy and 46 constipated participants, we measured BET and rectal area and volume with a software program before and after participants expelled rectal gel during proctography. KEY
resultsAll participants completed both tests; six healthy and 17 constipated patients had a prolonged (>60 seconds) BET. During evacuation, the reduction in rectal area and volume was lower in participants with an abnormal than a normal BET (P < 0.01). The reduction in rectal area and volume were strongly correlated (r = 0.93, P < 0.001) and equivalent for identifying participants with abnormal BET. Among participants with less evacuation, the reduction in rectal area underestimated the reduction in rectal volume. A rectocele larger than 2 cm was observed in eight of 18 (44%) participants in whom the difference between change in volume and area was ˃10% but only 14 of 77 (18%) participants in whom the difference was ≤10% (P = 0.03).
conclusionsMeasured with MR proctography, the rectal area is reasonably accurate for quantifying rectal emptying and equivalent to rectal volume for distinguishing between normal and abnormal BET. When evacuation is reduced, the change in rectal area may underestimate the change in rectal volume.
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