Sixty consecutive living related renal donors were evaluated retrospectively with regard to the adequacy of their preoperative angiograms. Comparison of the original radiologic reports and the surgical findings revealed no errors in the prediction of the number and length of renal arteries of the transplanted kidneys. The optimal arteriographic technique is defined in the context of the information required by the surgeon: it is concluded that selective renal arteriography, although often advocated, is seldom necessary if the standard anteroposterior view of the abdominal aortic injection is supplemented by oblique and occasionally other views in selected cases.