<prompt> Which of the following agents is used to measure glomerular filtration rate GFRIodohippurateTc99m DTPATc99m MAG3Tc99m DMSA  <response>: In dynamic renal scintigraphy :-GFR Tc - 99m - DTPAEffective renal plasma flow Tc-99m - MAG3, I - 123 - OIH. 