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Sequential computed tomography scans in acute cerebral infarction

Y Inoue, K Takemoto, T Miyamoto

    Radiology
    |June 1, 1980
    PubMed
    Summary
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    Computed tomography (CT) scans can detect acute cerebral infarction early, within 3-6 hours of symptom onset. Contrast enhancement improves detection of small petechial hemorrhagic infarctions, especially in gray matter regions.

    Area of Science:

    • Neurology
    • Radiology
    • Medical Imaging

    Background:

    • Acute cerebral infarction diagnosis relies on timely imaging.
    • Early detection of ischemic changes is crucial for patient management.
    • Identifying hemorrhagic transformation in infarction requires sensitive imaging techniques.

    Purpose of the Study:

    • To evaluate the efficacy of sequential computed tomography (CT) scans in detecting acute cerebral infarction.
    • To assess the role of contrast enhancement in identifying small petechial hemorrhagic infarctions.
    • To determine the optimal timing for contrast-enhanced CT in acute stroke.

    Main Methods:

    • Sequential computed tomography (CT) scans were performed on 30 patients diagnosed with acute cerebral infarction.
    • Scans were analyzed for early signs of infarction, occurring as early as 3-6 hours post-symptom onset.

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  • The utility of positive contrast enhancement was specifically examined for detecting petechial hemorrhagic infarction.

    • Main Results:

    • Infarction was detectable on CT scans as early as 3-6 hours after symptom onset in some patients.
    • Small petechial hemorrhagic infarctions, often located in cortical and deep gray matter, were challenging to detect without contrast.
    • Positive contrast enhancement demonstrated effectiveness in locating these small hemorrhagic infarctions.
    • Contrast enhancement was generally not required for CT scans performed within five days of ictus.

    Conclusions:

    • Sequential CT scans are valuable for early detection of acute cerebral infarction.
    • Contrast-enhanced CT is a useful method for identifying small petechial hemorrhagic infarctions.
    • Routine contrast enhancement may not be necessary for CT scans within the first five days of stroke onset.