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Temporary occlusion test using a microcatheter.

Lei Huang1, Chi Shing Zee, Xiao Long Zhang

  • 1Department of Radiology, Huashan Hospital, Fudan University, Shanghai, China.

World Neurosurgery
|November 22, 2011
PubMed
Summary

The microcatheter occlusion test offers a safe alternative for evaluating treatment in small arteries like the posterior inferior cerebellar artery (PICA). This method enabled successful endovascular repair of a PICA aneurysm.

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Area of Science:

  • Neurosurgery
  • Interventional Neuroradiology
  • Vascular Neurology

Background:

  • The balloon occlusion test (BOT) is standard for large aneurysms but challenging in small vessels.
  • The posterior inferior cerebellar artery (PICA) presents anatomical challenges for traditional BOT.
  • Endovascular treatment of complex aneurysms requires precise pre-procedural assessment.

Observation:

  • A fusiform PICA aneurysm in a 46-year-old male required evaluation for endovascular treatment.
  • Standard BOT was deemed unsafe due to the PICA's small diameter.
  • A microcatheter-based occlusion test was utilized as an alternative assessment method.

Findings:

  • The microcatheter occlusion test was successfully performed in the PICA.
  • This allowed for subsequent safe and effective endovascular embolization of the aneurysm.
  • The patient remained symptom-free at one-year follow-up.

Implications:

  • The microcatheter occlusion test is a viable and safe alternative for assessing treatment in diminutive vessels.
  • This technique expands endovascular treatment options for complex aneurysms in previously inaccessible arterial locations.
  • It enhances patient safety by allowing for accurate pre-procedural risk assessment in challenging neurovascular cases.