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Related Experiment Videos

Subarachnoid hemorrhage and aneurysms

B J Young1, M H Seigerman, R W Hurst

  • 1Department of Radiology, Germantown Hospital and Medical Center, Philadelphia, PA 19144, USA.

Seminars in Ultrasound, CT, and MR
|June 1, 1996
PubMed
Summary
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Ruptured intracranial aneurysms commonly cause acute subarachnoid hemorrhage (SAH). Noncontrast CT is the initial diagnostic imaging, while conventional angiography remains the gold standard for detecting aneurysms, with CT and MRI offering supplementary roles.

Area of Science:

  • Neurology
  • Radiology
  • Neurosurgery

Background:

  • Ruptured intracranial aneurysms are the primary cause of acute subarachnoid hemorrhage (SAH).
  • Accurate and timely diagnosis is crucial for patient outcomes.
  • Understanding the pathogenesis and presentation aids in diagnosis and management.

Purpose of the Study:

  • To discuss the pathogenesis, clinical presentation, and imaging characteristics of subarachnoid hemorrhage (SAH) and intracranial aneurysms.
  • To highlight the diagnostic roles of various imaging modalities.

Main Methods:

  • Review of the current literature on intracranial aneurysms and subarachnoid hemorrhage.
  • Discussion of diagnostic imaging techniques, including noncontrast CT, conventional angiography, CT angiography, and MR angiography.

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  • Emphasis on the established roles and limitations of each imaging modality.

    • Main Results:

    • Noncontrast computed tomography (CT) is the preferred initial imaging test for diagnosing SAH.
    • Conventional angiography is the gold standard for confirming the presence and anatomical detail of intracranial aneurysms.
    • CT and magnetic resonance imaging (MRI) play supplementary diagnostic roles.

    Conclusions:

    • Subarachnoid hemorrhage (SAH) due to ruptured intracranial aneurysms requires prompt diagnosis and management.
    • Noncontrast CT is essential for initial SAH detection.
    • Conventional angiography remains critical for definitive aneurysm diagnosis, complemented by CT and MRI.