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Portosystemic collaterals on MR imaging.

K Ohtomo, Y Itai, K Makita

    Journal of Computer Assisted Tomography
    |September 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

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    Magnetic resonance (MR) imaging effectively visualizes portosystemic collaterals like esophageal varices. Specific MR imaging views aid in identifying different types of collaterals, offering a valuable diagnostic tool.

    Area of Science:

    • Radiology
    • Medical Imaging
    • Gastroenterology

    Background:

    • Portosystemic collaterals are abnormal vascular connections that develop in portal hypertension.
    • Accurate imaging is crucial for managing complications associated with these collaterals.

    Purpose of the Study:

    • To evaluate the utility of magnetic resonance (MR) imaging in visualizing various portosystemic collaterals.
    • To compare the effectiveness of MR imaging with computed tomography (CT) and ultrasound.

    Main Methods:

    • Fourteen patients with diagnosed portosystemic collaterals underwent MR imaging.
    • Spin-echo sequences were utilized, and specific imaging planes (sagittal, coronal) were assessed for different collateral types.

    Main Results:

    Related Experiment Videos

    • MR imaging successfully demonstrated collateral pathways as tortuous, low-signal intensity structures.
    • Flow-related enhancement did not impede evaluation.
    • Sagittal views were optimal for paraumbilical veins, while coronal views were best for esophageal and mesenteric varices.

    Conclusions:

    • MR imaging is a valuable non-invasive technique for assessing portosystemic collaterals.
    • Specific MR imaging planes enhance the visualization of different collateral types.
    • MR imaging offers a comparable or superior alternative to CT and ultrasound in this clinical context.