“…Red blood cells (RBC) labeled with technetium-99m ( 99m Tc) have been used as radiopharmaceutical for a number of applications in nuclear medicine (Niemeyer et al, 1995;Harel et al, 2005;Wong et al, 2004;Olds et al, 2005;Verdu et al, 2005;Cortes et al, 2003;Jin et al, 2004;Benarroz et al, 2008a).…”