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Related Experiment Videos

Hepatic tumors: dynamic MR imaging.

K Ohtomo, Y Itai, K Yoshikawa

    Radiology
    |April 1, 1987
    PubMed
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    Magnetic resonance (MR) imaging effectively differentiates hepatic tumors. Gadolinium-enhanced MR imaging reveals typical patterns for hemangiomas and hepatocellular carcinomas, aiding in diagnosis.

    Area of Science:

    • Radiology
    • Oncology
    • Hepatology

    Background:

    • Hepatic tumors require accurate differentiation for effective treatment.
    • Magnetic resonance (MR) imaging offers advanced visualization of liver lesions.

    Purpose of the Study:

    • To characterize MR imaging patterns of hepatic tumors using gadolinium contrast.
    • To correlate imaging findings with histopathology for improved diagnostic accuracy.

    Main Methods:

    • Serial MR imaging was performed on 36 patients with hepatic tumors.
    • Gadolinium-diethylenetriaminepentaacetic acid was administered intravenously as a bolus injection.
    • Imaging analysis included precontrast, dynamic, and delayed phases.

    Main Results:

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    • A characteristic MR imaging pattern for hemangiomas (71.4%) included peripheral enhancement and delayed fill-in.
    • Hepatocellular carcinomas displayed varied enhancement patterns; 75% lacked high signal intensity on delayed scans.
    • A peripheral halo with delayed enhancement was observed in 42.8% of hepatocellular carcinomas, correlating with fibrous capsules.

    Conclusions:

    • Gadolinium-enhanced MR imaging is valuable for differentiating hepatic hemangiomas from hepatocellular carcinomas.
    • Imaging features, particularly enhancement patterns and delayed phases, correlate with tumor histology.
    • MR imaging findings aid in assessing tumor vascularity and capsular structure in hepatic lesions.