MR evaluation of CSF fistulae

V. Gupta, Mayank Goyal, N. Mishra, S. Gaikwad, A. Sharma

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

Purpose: To evaluate the role of MR imaging in the localisation of cerebrospinal fluid (CSF) fistulae. Material and Methods: A total of 36 consecutive unselected patients with either clinically proven CSF leakage (n=26) or suspected CSF fistula (n=10) were prospectively evaluated by MR. All MR examinations included fast spin-echo T2-weighted images in the 3 orthogonal planes. Thin-section CT was performed following equivocal or negative MR examination. MR and CT findings were correlated with surgical results in 33 patients. Results: CSF fistula was visualised as a dural-bone defect with hyperintense fluid signal continuous with that in the basal cisterns on T2-weighted images. MR was positive in 26 cases, in 24 of which the fistula was confirmed surgically. In 2 patients the CSF leakage was directly demonstrated on MR. MR sensitivity of 80% compared favourably with the reported 46-81 % of CT cisternography (CTC). No significant difference in MR sensitivity in detecting CSF fistula was found between active and inactive leaks Conclusion: MR is recommended as the first investigation for detecting a CSF fistula owing to its efficacy and to its freedom from the potential complications encountered with CTC.

Original languageEnglish
Pages (from-to)603-609
Number of pages7
JournalActa Radiologica
Volume38
Issue number4
DOIs
StatePublished - Jul 1997

Keywords

  • CT
  • Cerebrospinal fluid, leakage
  • MR

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