| Dynamic MR defecography with a superconducting, open-configuration MR system. | |
| | |
MedLine Citation:
|
PMID: 9494480 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
PURPOSE: To evaluate dynamic magnetic resonance (MR) defecography performed with a superconducting, open-configuration system in diagnosis of defecation disorders. MATERIALS AND METHODS: Five healthy volunteers and 15 patients with defecation disorders were studied with MR defecography performed with a superconducting, open-configuration system; the patients also underwent fluoroscopic defecography. Before MR imaging, the rectum was filled with 300 mL of mashed potatoes mixed with 1.5 mL of gadopentetate dimeglumine. T1-weighted gradient-echo images were acquired every 2 seconds in the midsagittal plane with the patient at rest, at maximal contraction of the anal sphincter, during straining, and during defecation. RESULTS: MR defecography permitted analysis of the anorectal angle, anal canal, puborectal muscle, and descent of the pelvic floor. Owing to the high signal intensity of the intraluminal contrast material, the rectal walls were well demonstrated on the MR images, permitting visualization of intussusception and rectocele. Concomitant demonstration of structures surrounding the anorectal canal was helpful in assessment of spastic pelvic floor syndrome and descending perineum syndrome. MR defecography was superior to fluoroscopic defecography and allowed detection of all clinically relevant pathologic conditions except for one. CONCLUSION: Dynamic MR defecography is an attractive alternative for evaluation of defecation disorders. |
| | |
Authors:
|
A W Schoenenberger; J F Debatin; I Guldenschuh; T F Hany; P Steiner; G P Krestin |
Publication Detail:
|
Type: Comparative Study; Journal Article |
Journal Detail:
|
Title: Radiology Volume: 206 ISSN: 0033-8419 ISO Abbreviation: Radiology Publication Date: 1998 Mar |
Date Detail:
|
Created Date: 1998-03-26 Completed Date: 1998-03-26 Revised Date: 2007-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 0401260 Medline TA: Radiology Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 641-6 Citation Subset: AIM; IM |
Affiliation:
|
Institute of Diagnostic Radiology, University Hospital Zurich, Switzerland. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Aged Anal Canal / pathology Barium Sulfate / diagnostic use Constipation / diagnosis* Contrast Media Defecography Evaluation Studies as Topic Female Gadolinium DTPA / diagnostic use Humans Magnetic Resonance Imaging / instrumentation, methods* Male Middle Aged Pelvic Floor / pathology ROC Curve Rectum / pathology |
| Chemical | |
Reg. No./Substance:
|
0/Contrast Media; 7727-43-7/Barium Sulfate; 80529-93-7/Gadolinium DTPA |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Frequency and effects of extravasation of ionic and nonionic CT contrast media during rapid bolus in...
Next Document: Esophageal varices: evaluation with transabdominal US.