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MR enteroclysis: technical considerations and clinical applications
Nicholas Gourtsoyiannis1, Nickolas Papanikolaou, John Grammatikakis
1Department of Radiology, University Hospital of Heraklion, University of Crete, P.O. Box 1352, 71110 Heraklion, Crete, Greece. gournick@med.uoc.gr
Abstract:
Magnetic resonance enteroclysis (MRE) is an emerging technique for the evaluation of small bowel abnormalities. Adequate luminal distention, achieved by the administration of iso-osmotic water solution through a nasojejunal catheter, in combination with ultrafast sequences, such as single-shot turbo spin echo, true fast imaging with steady precession, half-Fourier acquired single-shot turbo spin echo, and 3D fast low-angle shot, results in excellent anatomic demonstration of the small bowel. Magnetic resonance fluoroscopy can be performed during MRE examination and might be useful in studying low-grade stenosis or motility-related disorders. Magnetic resonance enteroclysis is very promising in detecting the number and extent of involved small bowel segments in patients with Crohn's disease, and in disclosing lumen narrowing and extramural manifestations and complications of the disease. Initial experience shows that MRE is very efficient in the diagnosis of small bowel tumors and can be used in the evaluation of small bowel obstruction.
Insights
Magnetic resonance enteroclysis (MRE) offers excellent small bowel visualization for diagnosing conditions like Crohn's disease and tumors. This advanced imaging technique aids in evaluating obstructions and other small bowel abnormalities effectively.
Area of Science:
- Radiology
- Gastroenterology
- Medical Imaging
Background:
- Small bowel abnormalities require advanced imaging for accurate diagnosis.
- Magnetic resonance enteroclysis (MRE) is an emerging technique for evaluating the small bowel.
Purpose of the Study:
- To evaluate the effectiveness of MRE in visualizing small bowel abnormalities.
- To assess MRE's utility in diagnosing Crohn's disease, tumors, and obstructions.
Main Methods:
- MRE involves administering an iso-osmotic water solution via a nasojejunal catheter for luminal distention.
- Ultrafast MRI sequences (e.g., SS-TSE, TrueFISP, HASTE, 3D FLS) are utilized.
- Magnetic resonance fluoroscopy can be incorporated for dynamic assessment.
Main Results:
- MRE provides excellent anatomic demonstration of the small bowel.
- The technique is promising for detecting Crohn's disease extent, lumen narrowing, and extramural complications.
- MRE shows efficiency in diagnosing small bowel tumors and evaluating obstructions.
Conclusions:
- MRE is a highly effective technique for small bowel evaluation.
- It offers significant diagnostic value for various small bowel pathologies, including inflammatory, neoplastic, and obstructive conditions.