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Related Experiment Video

Updated: Jan 12, 2026

Intrathecal Application of a Fluorescent Dye for the Identification of Cerebrospinal Fluid Leaks in Cochlear Malformation
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Spinal Cerebrospinal Fluid Leak Localization with Digital Subtraction Myelography: Tips, Tricks, and Pitfalls.

Javier Galvan1, Marcel Maya1, Ravi S Prasad2

  • 1Department of Imaging, Cedars-Sinai Medical Center; Department of Imaging, Cedars Sinai Medical Center, 8700 Beverly Boulevard Taper Mezzanine M-335, Los Angeles, CA 90048.

Neurosurgery Clinics of North America
|October 30, 2025
PubMed
Summary

Cerebrospinal fluid (CSF) leaks cause spontaneous intracranial hypotension (SIH) and headaches. Digital subtraction myelography (DSM) is a highly sensitive imaging technique for pinpointing these leaks, especially with the lateral decubitus view.

Keywords:
CT myelographyCerebrospinal fluid leakCerebrospinal fluid-venous fistulaDigital subtraction myelographyMR myelographySpontaneous intracranial hypotension

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Area of Science:

  • Neurology
  • Radiology
  • Medical Imaging

Background:

  • Cerebrospinal fluid (CSF) leaks can lead to spontaneous intracranial hypotension (SIH).
  • SIH often presents with neurological symptoms, notably orthostatic headaches.
  • Advanced imaging is crucial for diagnosing and locating CSF leaks.

Purpose of the Study:

  • To review the evolution and efficacy of imaging techniques for CSF leak detection.
  • To highlight the diagnostic superiority of digital subtraction myelography (DSM) in identifying leak sites.
  • To emphasize the value of the lateral decubitus DSM view.

Main Methods:

  • Review of various imaging modalities for CSF leak detection.
  • Comparison of computed tomography (CT) myelography, dynamic CT myelography, cone-beam CT, MRI, MR myelography, and digital subtraction myelography (DSM).
  • Focus on the sensitivity and radiation exposure of different techniques.

Main Results:

  • Digital subtraction myelography (DSM) demonstrates the highest sensitivity for detecting CSF leak locations.
  • DSM offers radiation exposure comparable to CT myelography.
  • The lateral decubitus DSM technique is particularly effective for localizing leaks when other methods fail.

Conclusions:

  • Digital subtraction myelography (DSM) is the most sensitive imaging method for CSF leak diagnosis.
  • The lateral decubitus view in DSM significantly enhances the localization of CSF leaks.
  • Improved imaging techniques are vital for managing SIH caused by CSF leaks.