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Intracranial aneurysms

G Puskar1, P M Ruggieri

  • 1Department of Diagnostic Radiology, Cleveland Clinic Foundation, Ohio, USA.

Magnetic Resonance Imaging Clinics of North America
|August 1, 1995
PubMed
Summary
This summary is machine-generated.

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Magnetic resonance (MR) angiography offers a noninvasive method for evaluating intracranial aneurysms, with specific techniques like TOF and phase contrast providing flexibility. While MR angiography shows promise, its overall screening benefit requires further research and technological advancement.

Area of Science:

  • Neuroradiology
  • Medical Imaging

Background:

  • Intracranial aneurysms pose significant health risks.
  • Conventional angiography, while effective, carries inherent risks and costs.
  • Noninvasive imaging modalities are sought for aneurysm evaluation.

Purpose of the Study:

  • To evaluate the role and efficacy of MR angiography in diagnosing intracranial aneurysms.
  • To outline current indications and limitations of MR angiography for aneurysm assessment.

Main Methods:

  • Utilizes Time-of-Flight (TOF) and phase contrast MR angiography techniques.
  • Assesses sensitivity and specificity of MR angiography in detecting aneurysms.
  • Reviews clinical scenarios and patient factors influencing MR angiography use.

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Main Results:

  • MR angiography provides rapid, accurate, and flexible noninvasive evaluation.
  • Specific techniques offer distinct advantages for optimizing aneurysm assessment.
  • High sensitivity and specificity for aneurysm detection are demonstrated.
  • Current decision analyses do not universally support MR angiography for screening.
  • MR angiography is not yet evaluated for acute subarachnoid hemorrhage.

Conclusions:

  • MR angiography is a valuable tool for specific indications in aneurysm evaluation, including incidental findings, contraindications to conventional angiography, and follow-up.
  • Further technical advancements and understanding of aneurysms may enhance its role in screening high-risk groups.
  • Contrast angiography remains integral for acute subarachnoid hemorrhage evaluation due to current limitations of MR angiography.