Rule Out (R/O) Intracranial Aneurysm

P. Ellen Grant1, R. Gilberto Gonzalez1, Pamela W. Schaefer1

1 Massachusetts General Hospital, Boston, Massachusetts
Publication Name:  Current Protocols in Magnetic Resonance Imaging
Unit Number:  Unit A1.2
DOI:  10.1002/0471142719.mia0102s06
Online Posting Date:  November, 2002
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When imaging patients for intracranial aneurysm, the goals are: (1) to assess the contour of the intracranial arteries, particularly in he regions of the ACOM (anterior communicating artery), PCOM (posterior communicating artery), ICA (internal carotid artery) bifurcation, MCA (middle cerebral artery) trifurcation, basilar tip, and PICA (posterior inferior cerebellar artery); (2) to assess the anatomy of the Circle of Willis and direction of flow, and; (3) to determine if there is evidence of a recent subarachnoid bleed. This unit describes a that can be used for standard imaging of aneurysm in stable patients. An is described for situations when there is concern for vasospasm and infarction.

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Table of Contents

  • Basic Protocol 1: Standard Imaging for Aneurysm Detection
  • Alternate Protocol 1: Aneurysm Screen and Assessment for Vasospasm/Infarction
  • Commentary
  • Literature Cited
  • Figures
  • Tables
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Basic Protocol 1: Standard Imaging for Aneurysm Detection

  • Normal saline (0.9% NaCl), sterile
  • Gadolinim‐DTPA contrast agent (e.g., Magnevist, Omniscan, or Prohance)
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Literature Cited

Literature Cited
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   Inagawa, T. and Hirano, A. 1990. Autopsy study of unruptured incidental intracranial aneurysms. Surg. Neurol. 34:361‐365.
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