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Computerized axial tomography: clinicopathologic correlation.

J P Kistler, F H Hochberg, B R Brooks

    Neurology
    |March 1, 1975
    PubMed
    Summary
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    Computerized axial tomography (CT) scans accurately correlated with pathologic findings in brain lesions. CT scan absorption values helped identify hemorrhage and calcified tumors but struggled with differentiating other brain abnormalities.

    Area of Science:

    • Neurology
    • Radiology
    • Pathology

    Background:

    • Computerized axial tomography (CT) has emerged as a powerful diagnostic tool in neuroimaging.
    • Early validation of CT scan findings against post-mortem pathological examination is crucial for establishing its clinical utility.

    Purpose of the Study:

    • To correlate intracranial lesions identified by CT scans with gross and microscopic pathological findings.
    • To evaluate the diagnostic capability of CT scan absorption values (mu) in differentiating various intracranial pathologies.

    Main Methods:

    • CT scans were performed on over 750 patients between August 1973 and April 1974.
    • Ten brains from previously CT-scanned patients were sectioned for direct comparison with scan images.
    • Absorption values (mu) were determined for 47 pathologically verified intracranial processes.

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    Main Results:

    • A high degree of correlation was observed between CT scan findings and pathological examination for diverse intracranial lesions, including tumors, hydrocephalus, hemorrhage, and infarction.
    • Absorption values effectively distinguished high-absorption processes like intracerebral hemorrhage and calcium-containing tumors from other lesions.
    • However, abnormal absorption values for primary brain tumors, edema, and infarction were difficult to differentiate from normal cerebrospinal fluid and white matter.

    Conclusions:

    • CT scanning demonstrates high accuracy in localizing and assessing the extent of intracranial lesions.
    • CT scan absorption values offer valuable diagnostic information, particularly for hemorrhage and calcified lesions.
    • Further refinement of CT technology and analysis is needed to improve differentiation of subtle pathological changes in the brain.