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Computed tomography and subarachnoid hemorrhage

B Liliequist, M Lindqvist, E Valdimarsson

    Neuroradiology
    |August 25, 1977
    PubMed
    Summary
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    Computed tomography (CT) effectively visualizes subarachnoid hemorrhage blood, aiding aneurysm detection and localization. This imaging is recommended as the primary diagnostic tool, followed by angiography.

    Area of Science:

    • Neurology
    • Radiology
    • Neurosurgery

    Background:

    • Subarachnoid hemorrhage (SAH) is a critical neurological condition often caused by ruptured aneurysms.
    • Early and accurate diagnosis is crucial for patient management and outcomes.

    Purpose of the Study:

    • To evaluate the utility of computed tomography (CT) in detecting subarachnoid hemorrhage and identifying associated aneurysms.
    • To assess the value of blood distribution patterns on CT in localizing aneurysms.

    Main Methods:

    • CT scans were performed on 39 of 41 patients presenting with subarachnoid hemorrhage.
    • Angiography was used to confirm the presence and location of aneurysms.
    • Analysis of blood distribution within the cisterns was correlated with aneurysm findings.

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    Main Results:

    • Blood was visualized in the cisterns in 18 of 32 CT examinations performed within five days of SAH in patients with confirmed aneurysms.
    • The pattern of blood distribution on CT scans was helpful in predicting the aneurysm's location.
    • CT also provided valuable information regarding rebleeding and infarction.

    Conclusions:

    • CT is a highly effective primary imaging modality for patients with suspected subarachnoid hemorrhage.
    • CT findings, particularly blood distribution, can aid in the diagnosis and localization of aneurysms.
    • Routine use of CT followed by selective angiography is recommended for comprehensive evaluation of SAH.