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Computed tomography in aneurysmal subarachnoid hemorrhage.

L A Weisberg

    Neurology
    |June 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

    Computed tomography (CT) effectively detects subarachnoid hemorrhage (SAH) and aids in locating ruptured aneurysms. While CT is reliable for identifying complications, it has limitations in definitively diagnosing small aneurysms.

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    Area of Science:

    • Neurosurgery
    • Neuroradiology
    • Medical Imaging

    Background:

    • Subarachnoid hemorrhage (SAH) is a critical neurovascular condition often caused by ruptured intracranial aneurysms.
    • Early and accurate diagnosis of SAH and its source is crucial for timely intervention and improved patient outcomes.

    Purpose of the Study:

    • To evaluate the diagnostic utility of computed tomography (CT) in patients with suspected subarachnoid hemorrhage (SAH) from aneurysms.
    • To assess CT's ability to detect SAH, predict aneurysm location, identify complications, and suggest the presence of intracranial aneurysms.

    Main Methods:

    • Retrospective analysis of 50 patients with subarachnoid hemorrhage (SAH) secondary to aneurysms.
    • Review of computed tomography (CT) scans, including plain and contrast-enhanced imaging.

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  • Correlation of CT findings with clinical presentation and, where available, angiographic results.

    • Main Results:

    • CT demonstrated evidence of bleeding in 28 out of 50 patients with SAH.
    • In 12 cases, CT findings characteristic of blood casts accurately predicted the ruptured aneurysm's site.
    • CT reliably identified complications such as infarction, edema, hematoma, hydrocephalus, and rebleeding.
    • Plain and contrast CT suggested large intracranial aneurysms in four cases.
    • CT was unable to provide definitive diagnosis or precise anatomic detail for aneurysms smaller than 2.0 cm.

    Conclusions:

    • Computed tomography (CT) is a valuable tool for diagnosing subarachnoid hemorrhage (SAH) and its complications.
    • CT can predict the location of ruptured aneurysms in a significant subset of patients.
    • CT has limitations in the definitive diagnosis and detailed characterization of small intracranial aneurysms, necessitating further investigation with angiography.