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Computed tomographic mammography (CTM).

J J Gisvold, D F Reese, P R Karsell

    AJR. American Journal of Roentgenology
    |December 1, 1979
    PubMed
    Summary
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    Computed tomographic mammography (CTM) with contrast infusion significantly improves breast cancer detection over mammography alone. Contrast-enhanced CTM reduces missed malignant lesions compared to non-contrast CTM and mammography.

    Area of Science:

    • Radiology
    • Oncology
    • Medical Imaging

    Background:

    • Mammography is a standard breast cancer screening tool.
    • Computed tomographic mammography (CTM) is an emerging imaging technique for breast evaluation.
    • The efficacy of CTM, particularly with contrast agents, requires further investigation.

    Observation:

    • A study evaluated 724 patients using physical examination, mammography, and CTM.
    • CTM was assessed with and without contrast material (50 ml injection or 300 ml infusion).
    • Malignant and benign lesions were analyzed for detection rates across imaging modalities.

    Findings:

    • Without contrast, mammography missed 10% of malignant lesions, CTM missed 32%, and both missed 8%.
    • With 50 ml contrast injection, mammography missed 14%, CTM missed 16%, and both missed 3%.

    Related Experiment Videos

  • With 300 ml contrast infusion, mammography missed 7%, CTM missed 5%, and neither missed any. Contrast-enhanced CTM significantly reduced missed malignant lesions, especially with infusion.

    • Implications:

    • Contrast-enhanced CTM, particularly with infusion, demonstrates superior sensitivity for detecting malignant breast lesions compared to mammography and non-contrast CTM.
    • CTM with contrast may reduce false negatives in breast cancer screening and diagnosis.
    • Further research into optimal contrast protocols for CTM is warranted to enhance diagnostic accuracy.