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Sequential delayed enhanced CT in brain tumors

Y Inaba, H Hiratsuka, K Komatsu

    Neuroradiology
    |January 1, 1978
    PubMed
    Summary
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    Delayed enhanced computed tomography (CT) effectively differentiates brain tumor types by analyzing enhancement patterns. Findings correlate well with radioisotope scans, aiding in diagnosis.

    Area of Science:

    • Neuroradiology
    • Neuro-oncology
    • Medical imaging

    Background:

    • Distinguishing between different types of brain tumors is crucial for effective treatment planning.
    • Computed tomography (CT) with contrast enhancement is a key imaging modality for evaluating intracranial lesions.
    • Understanding enhancement patterns can provide insights into tumor vascularity and cellular composition.

    Purpose of the Study:

    • To classify and analyze enhancement patterns observed in delayed enhanced CT scans of brain tumors.
    • To compare CT findings with delayed radioisotope scans, operative findings, and histopathology.
    • To evaluate the diagnostic utility of delayed enhanced CT in differentiating brain tumor types.

    Main Methods:

    • Delayed enhanced CT was performed in 53 cases of brain tumors.

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  • Enhancement patterns were categorized into four types: immediate, delayed, intermediate sustained, and no enhancement.
  • CT findings were correlated with delayed radioisotope scan results and subsequent operative and histopathologic diagnoses.

    • Main Results:

    • Four distinct enhancement patterns were identified and associated with specific tumor types: immediate (meningiomas), delayed (cystic astrocytomas), intermediate sustained (glioblastoma multiforme), and no enhancement (diffuse astrocytomas).
    • The results of delayed enhanced CT showed a good correlation with those obtained from delayed radioisotope scans.
    • Histopathological analysis confirmed the classifications based on CT enhancement patterns.

    Conclusions:

    • Delayed enhanced CT provides valuable information for differentiating brain tumor types based on characteristic enhancement patterns.
    • The observed enhancement patterns correlate well with underlying tumor biology and vascularity.
    • Delayed enhanced CT is a reliable imaging technique that complements other diagnostic modalities like radioisotope scans.