Related Experiment Videos
Rectal perflubron: new application in MRI of perirectal fistulae
P J Mergo1, T Helmberger, J J Cerda
1Department of Radiology, University of Florida College of Medicine, Gainesville 32160-0374, USA.
Purpose:
Our goal was to determine the efficacy of MRI with rectal administration of perflubron in the evaluation of perirectal and pelvic fistulae, with an emphasis on development of an improved method for fistula visualization.
Method:
Fourteen pelvic and/or perirectal fistulae were evaluated in nine patients with MRI after the rectal administration of 200 ml of perflubron. Images were reviewed by two independent readers and evaluated for the presence or absence of fistulae. Qualitative assessment was also performed, rating the examinations for the ability to visualize the fistulae. Comparison was made with the clinical examination and/or operative findings, as well as available preperflubron imaging studies (CT = 10; fluoroscopy = 1; preperflubron MRI = 4).
Results:
MRI with rectal perflubron demonstrated all 14 fistulae (100%), while preperflubron imaging demonstrated only 7 of 14 (50%) fistulae (p < or = 0.008, Wilcoxon signed rank test). In addition, MRI with perflubron resulted in significantly improved qualitative visualization of fistulae (overall very good rating versus poor rating for preperflubron imaging, p < or = 0.006, Wilcoxon signed rank test).
Conclusion:
MRI with rectal perflubron is a superior modality for imaging of fistulae, compared with conventional methods, since it allows a noninvasive means of demonstrating the presence of a fistula as well as offers improved qualitative assessment of fistulous disease.
Insights
Magnetic resonance imaging (MRI) with rectal perflubron significantly improves the detection and visualization of perirectal and pelvic fistulae compared to conventional methods. This enhanced MRI technique offers a superior, noninvasive approach for diagnosing fistulous disease.
Area of Science:
- Radiology
- Gastroenterology
- Surgical Imaging
Background:
- Perirectal and pelvic fistulae pose diagnostic challenges.
- Conventional imaging methods have limitations in visualizing fistulous tracts.
- Improved noninvasive imaging is needed for accurate fistula evaluation.
Purpose of the Study:
- To evaluate the efficacy of MRI with rectal perflubron for perirectal and pelvic fistula detection.
- To develop an improved method for fistula visualization using MRI.
- To compare MRI with rectal perflubron against pre-existing imaging modalities.
Main Methods:
- MRI was performed on nine patients with 14 pelvic/perirectal fistulae after rectal administration of 200 ml perflubron.
- Two independent readers assessed images for fistula presence and qualitative visualization.
- Findings were compared with clinical/operative data and pre-perflubron imaging (CT, fluoroscopy, MRI).
Main Results:
- MRI with rectal perflubron detected 100% of fistulae (14/14), significantly outperforming pre-perflubron imaging (50%, 7/14; p < 0.008).
- Qualitative visualization of fistulae was significantly improved with perflubron MRI (very good vs. poor; p < 0.006).
- This technique offers a superior, noninvasive method for fistula assessment.
Conclusions:
- MRI with rectal perflubron is a superior modality for imaging perirectal and pelvic fistulae.
- It provides a noninvasive means to demonstrate fistula presence.
- The method offers improved qualitative assessment of fistulous disease compared to conventional techniques.