[Anatomic resolution of intra-arterial digital subtraction angiography of the kidney using different concentrations of contrast media].

In 40 patients in whom intra-arterial DSA of the kidney was carried out, the appearance of the vessels was compared between group A (20 patients) in whom 5 ml. of Iopamidol 300 mg. I./ml. and 5 ml. Iopamidol 150 mg. I./ml. were used, with group B (20 patients) in whom 5 ml. Iopamidol 300 mg. I./ml. and 10 ml. Iopamidol 150 mg. I./ml. were used. Apart from the well known advantages of intra-arterial DSA, no improvement was brought about by using lower concentration of contrast.