Influence of rectal gel volume on defecation during dynamic pelvic floor magnetic resonance imaging

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• 作者：Gaurav Khatri^a ; ^{gaurav.khatri@utsouthwestern.edu" class="auth_mail" title="E-mail the corresponding author} ; April A. Bailey^a ; ¹ ; ^{april.bailey2@utsouthwestern.edu" class="auth_mail" title="E-mail the corresponding author} ; Chasta Bacsu^b ; ² ; ^{cd_bacsu@yahoo.ca" class="auth_mail" title="E-mail the corresponding author} ; Alana L. Christie^c ; ³ ; ^{alana.christie@utsouthwestern.edu" class="auth_mail" title="E-mail the corresponding author} ; Neil Kumar^a ; ⁴ ; ^{neil.kumar@phhs.org" class="auth_mail" title="E-mail the corresponding author} ; Ivan Pedrosa^a ; ^d ; ⁵ ; ^{ivan.pedrosa@utsouthwestern.edu" class="auth_mail" title="E-mail the corresponding author} ; Philippe Zimmern^b ; ⁶ ; ^{philippe.zimmern@utsouthwestern.edu" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Pelvic organ prolapse ; MR defecography ; Rectal contrast ; Rectal gel ; Dynamic pelvic MRI
• 刊名：Clinical Imaging
• 出版年：2015
• 出版时间：November-December 2015
• 年：2015
• 卷：39
• 期：6
• 页码：1027-1031
• 全文大小：473 K

文摘

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 cm², P< .0001). Post-defecation rectal area and change in area (pre- to post-defecation) were not significantly different. Subjective evaluation showed no significant difference.

Conclusion

Decreasing rectal gel volume from 180 to 120 cc did not compromise defecation performance during MRD.