Influence of rectal gel volume on defecation during dynamic pelvic floor magnetic resonance imaging
2015
Abstract Purpose To evaluate effects of altering rectal contrast volume on defecatory effort during magnetic resonance defecography (MRD). Methods We assessed defecation qualitatively and quantitatively as a function of rectal distention (group A: 180 cc, n =31; group B: 120 cc, n =31). Quantitative evaluation comprised measuring rectal area on midline sagittal images pre- and post-defecation. Results Resting rectal area was significantly higher for group A than for group B (35.2 vs. 28.3 cm 2 , P Conclusion Decreasing rectal gel volume from 180 to 120 cc did not compromise defecation performance during MRD.
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