Practical Reviews

Factors Affecting LSF on Tc-99m MAA Mapping Angiogram


Background: Tc-99m macroaggregated albumin (MAA) scan is a surrogate marker for Y90 to evaluate hepatic/extrahepatic distribution and calculate lung shunt fraction (LSF). High LSF precludes radioembolization treatment or necessitates Y90 dose adjustment to prevent lung toxicity. Objective: To evaluate the factors contributing to different lung shunt fractions. Design: Single center retrospective study. Methods: Data of 130 patients who had Y90 treatments and underwent Tc-99m MAA ad more...
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