macroaggregated albumin

mac·ro·ag·gre·ga·ted al·bu·min (MAA),

conglomerates of human serum albumin in a suspension; usually refers to particles 10-50 mcm in size; used as a tagged agent for lung scintigraphy.
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References in periodicals archive ?
Liver and vertebral uptake of Tc-99m macroaggregated albumin (MAA).
Vertebral Uptake of Tc-99m Macroaggregated Albumin (MAA) with SPECT/CT Occurring in Superior Vena Cava Obstruction.
Caption: Figure 2: Anterior and posterior static head images of lung perfusion scan images with Tc-99m macroaggregated albumin (MAA) show focal tracer uptake noted at the region of brain (white arrows) and stomach and faint renal uptake (not shown) indicative of right-to-left shunt.
Macroaggregated albumin (MAA) was obtained from Triad Isotopes (DraxImage kit).
Abbreviations MAA: Macroaggregated albumin PET: Positron Emission Tomography SIRT: Selective Internal Radiation Treatment SPECT: Single Photon Emission Tomography.
Becker, "The distribution, metabolic fate and radiation dosimetry of [sup.131]I labeled macroaggregated albumin," Journal of Nuclear Medicine, vol.
Macroaggregated albumin (shown to target lung tissue) was used as an adjuvant to help elicit systemic as well as mucosal responses.