NCI Drug Dictionary

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The NCI Drug Dictionary contains technical definitions and synonyms for drugs/agents used to treat patients with cancer or conditions related to cancer. Each drug entry includes links to check for clinical trials listed in NCI's List of Cancer Clinical Trials.

ferumoxsil oral suspension
An orally administered aqueous suspension of silicone-coated, superparamagnetic iron oxide used as a magnetic resonance imaging (MRI) contrast agent. After oral administration, ferumoxsil fills the stomach and intestines. Upon exposure to the strong external magnetic field during MRI, ferumoxsil exhibits strong T1 relaxation properties and a strongly varying local magnetic field; T2 relaxation is enhanced, thereby darkening the contrast agent-containing portion of the gastrointestinal tract. Delineation of the bowel is thus enhanced, distinguishing bowel from organs and tissues adjacent to the upper regions of the gastrointestinal tract. Check for active clinical trials using this agent. (NCI Thesaurus)
US brand names:GastroMARK