Apr 6, 2014
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An organic iodine salt that is radio-opaque and therefore used as a contrast medium to outline various organs in the body in X-ray films (see XRAYS). It is given intravenously. Its main use is in PYELOGRAPHY – that is, in rendering the kidneys radio-opaque – but it is also used to outline the blood vessels (ANGIOGRAPHY) and the gall-bladder and bile ducts (CHOLANGIOGRAPHY).

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Medical Dictionary

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