Improved renal screening on bone scans.

Intravenous injection of Tc-99m-labeled radionuclides permits angioscintigraphic and blood pool visualization of both supra- and infradiaphragmatic organs. By adding this procedure to routine bone scans an improvement in the diagnostic yield of incidentally observed renal abnormalities was achieved. Several illustrative cases involving hyper- and hypovascular lesions are presented. The authors recommended increased use of immediate postinjection blood pool studies in all routine brain and bone scans as a means of renal screening at negligible cost.