Preparation and evaluation of [99m]Tc-DMSA lyophilized kit for renal imaging

ABSTRACT

Dimercaptosuccinic acid [DMSA] has been evaluated and used with technetium 99m [[99m]Tc] in imaging of kidneys. DMSA lyophilized kits were prepared and radiolabelled with [99m]Tc. Paper and thin-layer chromatography have been employed using various eluent systems for the radiochemical analysis, percentage labeling and binding capacity of [99m]Tc-DMSA. Female albino rabbits were used for this study. Biological data obtained after intravenous injection of radiolabelled DMSA to female albino rabbits revealed 32.42% uptake and long retention time in the kidneys. On the basis of animal biodistribution data, it is suggested that DMSA when labeled with [99m]Tc is useful complex for renal imaging and can be successfully applied as a diagnostic tool in nuclear medicine. Clinical biodistribution and radiation dosimetry studies are planned in future