gold-198

gold-198,

a radioactive gold antineoplastic.

indications It is prescribed for treatment of cancer of the prostate, cervix, and bladder and for reduction of fluid accumulation secondary to a cancer.

contraindications Ulcerative tumors, pregnancy, lactation, or unhealed surgical wounds prohibit its use. It is not prescribed for patients less than 18 years of age.

adverse effect The most serious adverse effect is radiation sickness.

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gold

a chemical element, atomic number 79, atomic weight 196.967, symbol Au. See Table 6. Gold and many of its compounds are used in human medicine and occasionally in veterinary medicine. See also chrysotherapy.

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gold-198

a radioisotope of gold having a half-life of 2.7 days and emitting gamma and beta radiation. Symbol ¹⁹⁸Au.

gold colloid scintiscan

see scintiscan.

gold dust

a disease of aquarium fish caused by the flagellate protozoon Oodinium limnecicum. Affected fish develop a varnished look caused by a very heavy infestation of the protozoa on the skin and die within a few days.

gold standard

the ultimate standard to which all endeavors aspire.