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Cerebrospinal fluid fistula: detection with MR cisternography
T El Gammal1, W Sobol, V R Wadlington
1Department of Radiology, University of Alabama at Birmingham, 35233, USA.
AJNR. American Journal of Neuroradiology
|May 12, 1998
Summary
Magnetic resonance (MR) cisternography accurately diagnoses cerebrospinal fluid (CSF) leaks, commonly known as CSF rhinorrhea. This imaging technique shows high correlation with surgical findings, aiding in patient evaluation.
Area of Science:
- Neurology
- Radiology
- Otolaryngology
Background:
- Cerebrospinal fluid (CSF) rhinorrhea, a leakage of CSF from the nose, can result from head trauma or spontaneous causes.
- Accurate diagnosis is crucial for timely surgical intervention and preventing complications like meningitis.
Purpose of the Study:
- To evaluate the diagnostic efficacy of MR cisternography in patients presenting with suspected CSF rhinorrhea.
- To compare MR cisternography findings with surgical outcomes in a cohort of patients.
Main Methods:
- MR cisternography was conducted using heavily T2-weighted fast spin-echo sequences with fat suppression and image reversal.
- The study included 37 patients over a 3-year period, with 24 undergoing subsequent exploratory surgery for fistula.
- Statistical analysis compared MR cisternography results against surgical findings.
Main Results:
- MR cisternography demonstrated a significant correlation with surgical findings.
- The diagnostic performance metrics were: sensitivity of 0.87, specificity of 0.57, and accuracy of 0.78.
- These results indicate a high degree of reliability in identifying CSF leaks.
Conclusions:
- MR cisternography is an effective and accurate imaging modality for diagnosing CSF rhinorrhea.
- The technique provides valuable information that aligns well with surgical confirmation.
- It is recommended as a key diagnostic tool for patients with suspected CSF leaks.