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- Quantitative estimation of the renal tubular function with 99mTc- MAG3: comparative software approach using two methods in a pediatric populationPublication . Raminhas Carapinha, Maria João; Silva, R.; Silva, F.; Figueiredo, Sérgio; Vieira, Lina OliveiraIntroduction - The ability to quantify function by Effective Renal Plasma Flow (ERPF) using camera-based Technetium-99m mercaptoacetyltriglycine (99mTc-MAG3) clearance methods is an accurate and time-saving technique as compared with the standard laboratory tests. Often providing information not possible with the conventional radiological modalities, this quantitative assessment can be determined by a linear formula - Modified Gates Method (MGat) - or a quadratic approach - Modified Schlegel Method (MSch). The aim of this work was to evaluate the effect of the MGat and MSch methods on the absolute value of ERPF in 99mTc-MAG3 dynamic renography.