mercaptoacetyltriglycine: a tracer used in nuclear medicine, during *renography, when labelled with technetium-99m. This agent is cleared by glomerular filtration and tubular secretion by the kidneys. It can be used to measure effective renal plasma flow and to give anatomical information. Compared with a *DTPA scan, it can be used in patients with impaired renal function.... mag3
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