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MR imaging of the small bowel with a true-FISP sequence after enteroclysis with water solution
N Gourtsoyiannis1, N Papanikolaou, J Grammatikakis
1Department of Radiology, University Hospital of Heraklion, Crete, Greece. gour@edu.uch.gr
Rationale And Objectives:
To evaluate a novel MR enteroclysis technique for small-bowel imaging.
Methods:
Twenty-one patients with suspected small-bowel disease underwent both MR and conventional enteroclysis. MR enteroclysis was performed by injecting an iso-osmotic water solution through a nasojejunal catheter with a flow rate of 80 to 150 mL/min. A maximum of 2 L of water solution was administered. A dynamic heavily T2-weighted single-shot turbo spin-echo sequence was applied in coronal orientation to monitor the bowel filling and adequate distention. Twelve 4-mm-thick slices were acquired by using a true fast imaging with steady-state precession (true-FISP) sequence during an 18-second breath-hold interval. Small-bowel distention, wall conspicuity, homogeneity of opacification, and the presence of artifacts were subjectively evaluated by two reviewers using five-point scales.
Results:
Chemical shift artifacts were low and ghost artifacts were absent. Susceptibility artifacts were more prominent in the ileum; motion artifacts were low in the jejunum, ileum, and ileocecal area. Homogeneity of opacification was very good in the jejunum, good to very good in the ileum, and good in the ileocecal area. Distention was very good to excellent in the jejunum and ileum and very good in the ileocecal area. Wall conspicuity was very good to excellent in the jejunum and ileum.
Conclusions:
MR enteroclysis with the true-FISP sequence produced high-quality images of the small bowel. Further clinical studies are required to determine the clinical efficacy of the new technique compared with conventional enteroclysis.
Insights
This study shows that Magnetic Resonance (MR) enteroclysis using the true fast imaging with steady-state precession (true-FISP) sequence provides high-quality small bowel imaging. Further research is needed to compare its clinical effectiveness against conventional enteroclysis.
Area of Science:
- Radiology
- Gastroenterology
- Medical Imaging
Background:
- Small-bowel imaging is crucial for diagnosing various conditions.
- Conventional enteroclysis has limitations.
- Novel imaging techniques are being developed to improve diagnostic accuracy.
Purpose of the Study:
- To evaluate a new Magnetic Resonance (MR) enteroclysis technique for small-bowel imaging.
- To assess the image quality and diagnostic potential of MR enteroclysis.
Main Methods:
- Twenty-one patients with suspected small-bowel disease underwent both MR and conventional enteroclysis.
- MR enteroclysis involved injecting an iso-osmotic water solution via a nasojejunal catheter.
- High-quality images were acquired using a true fast imaging with steady-state precession (true-FISP) sequence.
Main Results:
- MR enteroclysis with the true-FISP sequence demonstrated low artifacts and excellent image quality.
- High homogeneity of opacification, distention, and wall conspicuity were observed in the jejunum and ileum.
- Artifacts were minimal, with susceptibility artifacts being more prominent in the ileum.
Conclusions:
- The novel MR enteroclysis technique using the true-FISP sequence yields high-quality small bowel images.
- Further clinical studies are necessary to establish the efficacy of MR enteroclysis compared to conventional methods.