contrast medium definition

  • noun:
    • A substance, including barium or air, used in radiography to increase the contrast of a picture. An optimistic comparison medium absorbs x-rays much more highly compared to the tissue or construction being analyzed; a bad contrast medium, less highly.
    • Any material, particularly barium sulfate, utilized in radiography to improve the visibility of interior structures
    • a substance that is opaque to x-rays; whenever administered permits a radiologist to examine the organ or structure it fills

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  • Hypernym for "contrast medium"
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