NCI Drug Dictionary

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.

technetium Tc 99m-labeled macroaggregated albumin
An injectable radiopharmaceutical formulation containing human serum albumin (HSA) labeled with technetium-99m (Tc99m) in macroaggregates (MAA) with diagnostic imaging activity. Technetium Tc 99m-labeled macroaggregated albumin contains the gamma-emitting Tc99m, a metastable nuclide of molybdenum-99. Upon injection into the hepatic artery and upon SPECT (single photon emission computed tomography) imaging, distribution patterns and possible prediction of expected distribution of agents with similar particle sizes within the liver can be assessed and may give a prediction about the tumor response upon administration of such agents. Check for active clinical trials using this agent. (NCI Thesaurus)

Synonym:(99m)Tc-labeled macroaggregated albumin
Tc 99m-labeled macroaggregated albumin
technetium Tc-99m albumin aggregated
technetium-99m-labeled albumin macroaggregates
Abbreviation:(99m)Tc-labeled MAA
Tc 99m-labeled MAA